Unnamed: 0 int64 0 756 | Текст запроса stringlengths 27 605 | Контекст stringclasses 4
values | Ответ stringlengths 19 1.61k |
|---|---|---|---|
400 | Вывести полные имена студентов, обучающихся в группе M0220, которые зарегистрировались в библиоткеки в период с 2017-09-01 по 2019-09-01. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT full_name_r FROM readers, reader_reg WHERE reader_status = 'обучается' AND reader_groups = 'M0220' AND reader_reg.reader_id = readers.reader_id AND date_reg BETWEEN '2017-09-01' AND '2019-09-01';
|
401 | Вывести имена и статус читателей, которым выдавали книги работники со средним профессиональным образованием в период с 2020-01-01 по 2020-03-01. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
readers.full_name_r
, readers.reader_status
FROM
readers
, take_book
, workers
WHERE
readers.reader_id = take_book.reader_id
AND take_book.worker_id = workers.worker_id
AND workers.education = 'среднее профессиональное'
AND take_book.fixing_date BETWEEN '2020-01-01' AND '2020-03-01';
|
402 | Вывести.уникальные ФИО и номера телефонов читателей, являющихся преподавателями, которых зарегестрировал работник библиотеки с идентификатором 8 в период между 2017-01-01 и 2017-12-29. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
readers.full_name_r
, readers.phone
FROM
readers
, reader_reg
, workers
WHERE
readers.reader_id = reader_reg.reader_id
AND reader_reg.worker_id = workers.worker_id
AND workers.worker_id = 8
AND reader_reg.date_reg BETWEEN '2017-01-01' AND '2017-12-29'
AND readers.occupation = 'преподаватель';
|
403 | Вывести имена и номера групп обучающихся, которым выдавали книги работники с высшим образованием в период с 2019-03-01 по 2020-03-10. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
readers.full_name_r
, readers.reader_groups
FROM
readers
, take_book
, workers
WHERE
readers.reader_id = take_book.reader_id
AND take_book.worker_id = workers.worker_id
AND workers.education = 'высшее'
AND take_book.fixing_date BETWEEN '2019-03-01' AND '2020-03-10'
AND readers.reader_status = 'обучается';
|
404 | Вывести имена читателей и работников, которые выдавали им книги в читальном зале 'Читальный зал №2 учебной литературы' в период с 2018-05-01 по 2020-05-01. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, full_name_r
FROM readers, take_book, workers, reading_rooms WHERE readers.reader_id = take_book.reader_id AND take_book.worker_id = workers.worker_id AND reading_rooms.hall_number = take_book.hall_number AND name = 'Читальный зал №2 учебной литературы' AND fixing_date BETWEEN '2018-05-01' AND '2020-05-01';
|
405 | Вывести неповторяющиеся идентификаторы читателей, который брали в абонемент (fixing_date<>f_return_date) книгу в читальных залых под номером №1 в период времени с 2020-01-01 по 2020-01-31. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT readers.reader_id
FROM
readers
, take_book
, reading_rooms
WHERE
readers.reader_id = take_book.reader_id
AND take_book.hall_number = reading_rooms.hall_number
AND reading_rooms.name LIKE '%№1%'
AND take_book.fixing_date <> take_book.f_return_date
AND take_book.fixing_date BETWEEN '2020-01-01' AND '2020-01-31';
|
406 | Вывести общую сумму штрафов по библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT SUM(fine) FROM take_book;
|
407 | Вывести средний штраф по библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT AVG(fine) FROM take_book;
|
408 | Вывести минимальный штраф по библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT MIN(fine) FROM take_book;
|
409 | Вывести максимальный штраф по библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT MAX(fine) FROM take_book;
|
410 | Вывести, сколько раз библиотека совершала выдачу книг за все время. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT COUNT(op_id) FROM take_book;
|
411 | Сколько читателей работает? |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT COUNT(reader_id) FROM readers WHERE reader_status = 'работает';
|
412 | Сколько работающих преподавателей зарегистрировано в библиотеке? |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT COUNT(reader_id)
FROM readers
WHERE reader_status = 'работает' AND occupation = 'преподаватель';
|
413 | Вывести количество книг, которые были выданы в зале с названием 'Читальный зал №2 учебной литературы' в период после 2019-02-18. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT COUNT(take_book.hall_number) FROM reading_rooms, take_book WHERE reading_rooms.hall_number = take_book.hall_number AND name = 'Читальный зал №2 учебной литературы' AND fixing_date > '2019-02-18';
|
414 | Сколько читателей в процентном соотношении относятся к студентам, а сколько к преподавателям? Вывести полученные результаты в колонки c соответствующими названиями (‘студенты’, ‘преподаватели’). Округлить до двух знаков после запятой. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
ROUND((100.00 - s), 2) AS 'студенты'
, ROUND(s, 2) AS 'преподаватели'
FROM (SELECT (COUNT(*) / (SELECT COUNT(*) FROM readers)) * 100.00 AS s FROM readers WHERE occupation = 'преподаватель') AS temp;
|
415 | Сколько экземпляров книг с жанром рассказ и роман? Вывести два значения с соответствующими названиями 'роман' и 'рассказ'. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
(SELECT COUNT(instance_id) FROM instances, books
WHERE instances.book_id = books.book_id AND books.genre = 'роман') AS роман,
(SELECT COUNT(instance_id) FROM instances, books
WHERE instances.book_id = books.book_id AND books.genre = 'рассказ') AS рассказ;
|
416 | Сколько работников в процентном отношении имеют высшее, среднее профессиональное, среднее образования? Вывести три значения с соответствующими названиями "высшее", 'среднее профессиональное' и 'среднее'. Округлить значения до двух знаков после запятой. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
ROUND((100.00 - s1 - s2), 2) AS 'высшее'
, ROUND(s2, 2) AS 'среднее профессиональное'
, ROUND(s1, 2) AS 'среднее'
FROM
(SELECT (COUNT(*) / (
SELECT COUNT(*) FROM workers
)) * 100.00 AS s1 FROM workers WHERE education = 'среднее') AS m1
, (SELECT (COUNT(*) / (
SELECT COUNT(*) FROM workers
)) * 100.00 AS s2 FROM workers WHERE education = 'среднее профессиональное') AS m2;
|
417 | Сколько студентов в процентном соотношении относятся к каждой учебной группе (M0010, M0220, T0023 и T0033)? Вывести четыре значения с соответствующими названиями "M0010", "M0220", "T0023" и "T0033". |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
(100.00 - s1 - s2 - s3) AS m0010
, S1 'M0220'
, s2 AS t0023
, s3 AS t0033
FROM
(SELECT (COUNT(*) / (
SELECT COUNT(*) FROM readers
)) * 100.00 AS s1 FROM readers WHERE reader_groups = 'M0220') AS m1
, (SELECT (COUNT(*) / (
SELECT COUNT(*) FROM readers
)) * 100.00 AS s2 FROM readers WHERE reader_groups = 'T0023') AS m2
, (SELECT (COUNT(*) / (
SELECT COUNT(*) FROM readers
)) * 100.00 AS s3 FROM readers WHERE reader_groups = 'T0033') AS m3;
|
418 | Посчитайте количество работников для каждого вида образования. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
education
, COUNT(*)
FROM workers GROUP BY education;
|
419 | Для каждой книги посчитать количество ее экземпляров. Вывести название книги и количество экземпляров. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, COUNT(instances.book_id)
FROM books, instances WHERE books.book_id = instances.book_id GROUP BY instances.book_id;
|
420 | Для работников, рожденных раньше 26 декабря 1991 года, вывести количество выданных ими книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, COUNT(*)
FROM workers, take_book
WHERE workers.worker_id = take_book.worker_id AND birthday < '1991-12-26'
GROUP BY take_book.worker_id;
|
421 | Для работников, рожденных раньше 1980 года, вывести ФИО и количество оформленных ими книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, COUNT(instances.worker_id)
FROM workers, instances WHERE workers.worker_id = instances.worker_id AND birthday < '1980-01-01' GROUP BY instances.worker_id;
|
422 | Посчитать количество студентов в каждой учебной группе. Читателей вне групп учитывать не нужно. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
reader_groups
, COUNT(reader_id)
FROM readers WHERE reader_groups IS NOT null GROUP BY reader_groups;
|
423 | Для каждого работника посчитать количество зарегистрированных им читателей. Вывести ФИО работника и кол-во читателей. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, COUNT(reader_id)
FROM reader_reg AS r, workers AS w
WHERE w.worker_id = r.worker_id
GROUP BY w.worker_id;
|
424 | Для каждого работника посчитать количество зарегистрированных им экземпляров книг. Вывести ФИО работника и кол-во экземпляров. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, COUNT(instance_id)
FROM workers AS w, instances AS i
WHERE i.worker_id = w.worker_id
GROUP BY w.worker_id;
|
425 | Для авторов, фамилия которых начинается на букву ‘М’, вывести, сколько всего раз брали их книги. Вывести название книги и число раз. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
books.name
, COUNT(take_book.instance_id)
FROM take_book, instances, books
WHERE take_book.instance_id = instances.instance_id
AND instances.book_id = books.book_id
AND LEFT(books.author, 1) = 'М'
GROUP BY books.book_id;
|
426 | Вывести полные имена читателей и количество книг, которые брали Гавриловы. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
readers.full_name_r
, COUNT(take_book.reader_id)
FROM
take_book
, readers
WHERE
take_book.reader_id = readers.reader_id
AND readers.full_name_r LIKE '%Гаврилов%'
GROUP BY
take_book.reader_id;
|
427 | Для всех жанров, кроме научной литературы, вывести количество раз, когда возврат книги задерживался. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
category
, COUNT(take_book.instance_id)
FROM books, instances, take_book WHERE books.book_id = instances.book_id AND take_book.instance_id = instances.instance_id AND NOT category = 'научное' AND f_return_date < return_date GROUP BY category;
|
428 | Для всех не отчисленных студентов из групп 'T0023' и 'M0010' вывести названия залов, которые они посещают, и количество посещений. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, name
, COUNT(*) AS cnt
FROM readers, take_book, reading_rooms WHERE (reader_groups = 'T0023' OR reader_groups = 'M0010') AND NOT reader_status = 'отчислен' AND readers.reader_id = take_book.reader_id AND reading_rooms.hall_number = take_book.hall_number GROUP BY readers.reader_id, reading_rooms.hall_number;
|
429 | Для научной литературы вывести названия книг, категорию, сколько раз эту книгу брали студенты, а сколько преподаватели, упорядочить названия по алфавитному порядку названия книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, category
, COUNT(take_book.reader_id)
FROM readers, take_book, instances, books WHERE take_book.instance_id = instances.instance_id AND instances.book_id = books.book_id AND category = 'научное' AND readers.reader_id = take_book.reader_id GROUP BY books.book_id ORDER BY name ASC;
|
430 | Для студентов каждой группы обучения вывести, сколько всего книг было взято этой группой после 2018-01-01, в подсчётах не учитывать романы. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
reader_groups
, COUNT(take_book.reader_id)
FROM books, instances, take_book, readers WHERE books.book_id = instances.book_id AND take_book.instance_id = instances.instance_id AND readers.reader_id = take_book.reader_id AND NOT genre = 'роман' AND occupation = 'студент' AND fixing_date > '2018-01-01' GROUP BY reader_groups;
|
431 | Для каждого читального зала научной или учебной литературы вывести, сколько раз его посещали студенты, а сколько преподаватели (учитывать только обучающихся студентов и работающих преподавателей). |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, occupation
, COUNT(take_book.reader_id)
FROM readers, take_book, reading_rooms WHERE take_book.hall_number = reading_rooms.hall_number AND readers.reader_id = take_book.reader_id AND (species = 'научный' OR species = 'учебный') AND (reader_status = 'обучается' OR reader_status = 'работает') GROUP BY occupation, name ORDER BY name;
|
432 | Для категорий ‘учебное’ и 'научное' вывести, названия книг(name), категорию(category), вид занятости читателя(occupation) и сколько раз эту книгу брали студенты, а сколько преподаватели, упорядочить названия по алфавитному порядку названия книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, category
, occupation
, COUNT(take_book.reader_id)
FROM readers, take_book, instances, books
WHERE take_book.instance_id = instances.instance_id
AND instances.book_id = books.book_id
AND (category = 'учебное' OR category = 'научное')
AND readers.reader_id = take_book.reader_id
GROUP BY name, category, occupation
ORDER BY name ASC;
|
433 | Для каждого работника вывести количество читателей по каждому виду занятости, которых он зарегистрировал в период с 2015-01-15 по 2017-06-15. Выполнить запрос с использованием подзапросов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, occupation
, COUNT(*)
FROM workers, (SELECT
reader_id
, worker_id
FROM reader_reg WHERE date_reg BETWEEN '2015-01-15' AND '2017-06-15') AS temp_1, (SELECT
reader_id
, occupation
FROM readers) AS temp_2 WHERE temp_2.reader_id = temp_1.reader_id AND temp_1.worker_id = workers.worker_id GROUP BY temp_1.worker_id, occupation;
|
434 | Для каждого работника вывести количество книг по каждой категории книг, которые он зарегистрировал в период с 2018-01-01 по 2019-06-01. Выполнить запрос с использованием подзапросов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, category
, COUNT(*)
FROM workers, (SELECT
instance_id
, worker_id
, book_id
FROM instances WHERE date_reg BETWEEN '2018-01-01' AND '2019-06-01') AS temp_1, (SELECT
book_id
, category
FROM books) AS temp_2 WHERE temp_2.book_id = temp_1.book_id AND temp_1.worker_id = workers.worker_id GROUP BY temp_1.worker_id, category;
|
435 | Для каждого работника вывести количество студентов по каждой форме обучения, которых он зарегистрировал в период с 2017-05-10 по 2019-12-13 (не учитывать преподавателей, у которых форма обучения отсутствует). Выполнить запрос с использованием подзапросов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, education_mode
, COUNT(temp_1.worker_id)
FROM workers, (SELECT
reader_id
, worker_id
FROM reader_reg WHERE date_reg BETWEEN '2017-05-10' AND '2019-12-13') AS temp_1, (SELECT
reader_id
, education_mode
FROM readers WHERE education_mode IS NOT null) AS temp_2 WHERE temp_2.reader_id = temp_1.reader_id AND temp_1.worker_id = workers.worker_id AND education_mode IS NOT null GROUP BY temp_1.worker_id, education_mode;
|
436 | Вывести из таблицы books название издания, которое выпустило более 5 книг, хранящихся в библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT publisher
FROM books
GROUP BY publisher HAVING COUNT(*) > 5;
|
437 | Вывести номера групп, в которых больше 4 зарегистрированных в библиотеке студентов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT reader_groups FROM readers GROUP BY reader_groups HAVING COUNT(reader_groups) > 4;
|
438 | Вывести номера групп, в которых меньше 3 зарегистрированных в библиотеке студентов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT reader_groups FROM readers GROUP BY reader_groups HAVING COUNT(reader_groups) < 3;
|
439 | Вывести уникальные номера читательских билетов и ФИО читателей, которые брали книгу хотя бы один раз. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
library_card
, full_name_r
FROM
readers
, reader_reg
, take_book
WHERE
readers.reader_id = reader_reg.reader_id
AND readers.reader_id = take_book.reader_id
GROUP BY
library_card
HAVING
COUNT(*) >= 1;
|
440 | Вывести уникальные номера читательских билетов и ФИО читателей, которые брали больше 3 книг в библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
library_card
, full_name_r
FROM
readers
, reader_reg
, take_book
WHERE
readers.reader_id = reader_reg.reader_id
AND readers.reader_id = take_book.reader_id
GROUP BY
library_card
HAVING
COUNT(take_book.reader_id) > 3;
|
441 | Вывести уникальные номера читательских билетов и ФИО читателей, которые брали книгу в зал библиотеки (fixing_date=f_return_date) хотя бы один раз. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
library_card
, full_name_r
FROM
readers
, reader_reg
, take_book
WHERE
readers.reader_id = reader_reg.reader_id
AND readers.reader_id = take_book.reader_id
AND fixing_date = f_return_date
GROUP BY
library_card
HAVING
COUNT(*) >= 1;
|
442 | Вывести названия читальных залов, в которых брали больше семи книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM reading_rooms, (SELECT hall_number FROM take_book GROUP BY hall_number HAVING COUNT(hall_number) > 7) AS temp WHERE temp.hall_number = reading_rooms.hall_number;
|
443 | Вывести имена сотрудников, которые зарегистрировали больше восьми читателей. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT full_name FROM workers, (SELECT worker_id FROM reader_reg GROUP BY worker_id HAVING COUNT(worker_id) > 8) AS temp WHERE temp.worker_id = workers.worker_id;
|
444 | Вывести полные имена читателей, которые брали больше двух книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT full_name_r FROM readers, (SELECT reader_id FROM take_book GROUP BY reader_id HAVING COUNT(*) > 2) AS temp WHERE temp.reader_id = readers.reader_id;
|
445 | Вывести из таблицы readers наименования групп и столбец под названием 'number of students', в котором выводится количество учащихся студентов. Выводить только те группы, в которых меньше 4 учащихся студентов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
reader_groups
, COUNT(reader_id) AS 'number of students'
FROM readers
WHERE occupation = 'студент' AND reader_status = 'обучается'
GROUP BY reader_groups
HAVING COUNT(reader_id) < 4;
|
446 | Для каждого автора, кроме авторов, фамилия которых начинается на букву ‘А’, вывести количество экземпляров их книг, зарегистрированных в период между ‘2018-11-01’ и ‘2019-12-01’. Использовать HAVING. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
author
, COUNT(instances.book_id)
FROM books, instances WHERE books.book_id = instances.book_id AND date_reg BETWEEN '2018-11-01' AND '2019-12-01' GROUP BY instances.book_id HAVING NOT LEFT(author, 1) = 'А';
|
447 | Для каждого издателя по каждому его жанру, кроме романа, вывести, сколько раз брали эти книги в 2019 году. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
publisher
, genre
, COUNT(take_book.instance_id)
FROM books, instances, take_book WHERE books.book_id = instances.book_id AND instances.instance_id = take_book.instance_id AND fixing_date BETWEEN '2019-01-01' AND '2020-01-01' GROUP BY publisher, genre HAVING NOT genre = 'роман';
|
448 | Для каждого издательства по каждому жанру, кроме рассказа, вывести, сколько раз брали их книги в период с 2018-09-14 по 2019-12-03. Использоваnь HAVING. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
publisher
, genre
, COUNT(take_book.instance_id)
FROM books, instances, take_book WHERE books.book_id = instances.book_id AND instances.instance_id = take_book.instance_id AND fixing_date BETWEEN '2018-09-14' AND '2019-12-03' GROUP BY publisher, genre HAVING NOT genre = 'рассказ';
|
449 | Для каждого студента заочной форму обучения, фамилия которого начинается на буквы ‘З’ или ‘К’, вывести общее количество дней использования всех взятых им книг начиная с 2020-01-01, из вывода исключить строки со значением 0. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, SUM(days) AS sum
FROM readers, (SELECT
reader_id
, (return_date - fixing_date) AS days
FROM take_book WHERE fixing_date > '2020-01-01') AS temp WHERE education_mode = 'заочная'
AND temp.reader_id = readers.reader_id GROUP BY full_name_r HAVING (LEFT(full_name_r, 1) = 'К' OR LEFT(full_name_r, 1) = 'З') AND sum > 0;
|
450 | Для каждого студента очной форму обучения, фамилия которого начинается на буквы ‘М’ или ‘В’, вывести общее количество дней использования всех взятых им книг начиная с 2019-05-15, из вывода исключить строки со значением 0. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, SUM(days) AS sum
FROM readers, (SELECT
reader_id
, (return_date - fixing_date) AS days
FROM take_book WHERE fixing_date > '2019-05-15') AS temp WHERE education_mode = 'очная' AND temp.reader_id = readers.reader_id GROUP BY full_name_r HAVING (LEFT(full_name_r, 1) = 'Г' OR LEFT(full_name_r, 1) = 'М') AND sum > 0;
|
451 | Для каждого преподавателя с докторской степенью, фамилия которого начинается на буквы ‘Б’ или ‘К’, вывести общее количество дней использования всех взятых им книг начиная с 2019-07-01, из вывода исключить строки со значением 0. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, SUM(days) AS sum
FROM readers, (SELECT
reader_id
, (return_date - fixing_date) AS days
FROM take_book WHERE fixing_date > '2019-07-01') AS temp WHERE science_degree = 'доктор наук' AND temp.reader_id = readers.reader_id GROUP BY full_name_r HAVING (LEFT(full_name_r, 1) = 'Б' OR LEFT(full_name_r, 1) = 'К') AND sum > 0;
|
452 | Вывести всю информацию из таблицы workers о самом старом работнике. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT * FROM workers WHERE birthday = (SELECT MIN(birthday) FROM workers);
|
453 | Вывести названия книг с самым ранним годом публикации. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM books WHERE pub_year = (SELECT MIN(pub_year) FROM books);
|
454 | Вывести названия книг с самым поздним годом публикации. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM books WHERE pub_year = (SELECT MAX(pub_year) FROM books);
|
455 | Вынести из табицы readers информацию о читателях(full_name_r, occupation, reader_status), которые получили максимальный штраф за несоблюдение сроков сдачи книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
readers.full_name_r
, readers.occupation
, readers.reader_status
FROM
readers, take_book
WHERE
readers.reader_id = take_book.reader_id
AND take_book.fine = (
SELECT MAX(fine) FROM take_book
);
|
456 | Вынести из таблицы readers информацию о читателе, который получил минимальный штраф за несоблюдение сроков сдачи книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
readers.full_name_r
, readers.occupation
, readers.reader_status
FROM
readers
, take_book
WHERE
readers.reader_id = take_book.reader_id
AND take_book.fine = (
SELECT MIN(fine)
FROM take_book
);
|
457 | В каких залах чаще всего берут книги в зал (fixing_date=return_date) по сравнению с другими залами? Вывести названия залов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM reading_rooms, take_book WHERE reading_rooms.hall_number = take_book.hall_number AND fixing_date = return_date GROUP BY take_book.hall_number HAVING COUNT(take_book.hall_number) = (SELECT MAX(hall) FROM (SELECT COUNT(hall_number) AS hall FROM take_book WHERE fixing_date = return_date GROUP BY hall_number) AS temp);
|
458 | В каких залах реже всего берут книги в зал (fixing_date=return_date) по сравнению с другими залами? Вывести названия залов. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM reading_rooms, take_book WHERE reading_rooms.hall_number = take_book.hall_number AND fixing_date = return_date GROUP BY take_book.hall_number HAVING COUNT(take_book.hall_number) = (SELECT MIN(hall) FROM (SELECT COUNT(hall_number) AS hall FROM take_book WHERE fixing_date = return_date GROUP BY hall_number) AS temp);
|
459 | Вывести названия книг, которые имеют меньше всего экземпляров. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM books, (SELECT
book_id
, COUNT(book_id) AS book_count
FROM instances GROUP BY book_id) AS temp_1 WHERE temp_1.book_id = books.book_id AND book_count = (SELECT MIN(book_count) FROM (SELECT
book_id
, COUNT(book_id) AS book_count
FROM instances GROUP BY book_id) AS temp_2);
|
460 | Работники на какой должности зарегистрировали больше всего читателей? |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT position FROM (SELECT
position
, COUNT(workers.worker_id) AS worker_count
FROM workers, reader_reg WHERE workers.worker_id = reader_reg.worker_id GROUP BY position) AS temp_1 WHERE worker_count = (SELECT MAX(worker_count) FROM (SELECT
position
, COUNT(workers.worker_id) AS worker_count
FROM workers, reader_reg WHERE workers.worker_id = reader_reg.worker_id GROUP BY position) AS temp_2);
|
461 | Вывести номер самой активной группы (группы, в которой студенты брали больше всего книг). |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT reader_groups FROM (SELECT
reader_groups
, COUNT(readers.reader_id) AS group_count
FROM readers, take_book WHERE readers.reader_id = take_book.reader_id GROUP BY reader_groups) AS temp_1 WHERE group_count = (SELECT MAX(group_count) FROM (SELECT
reader_groups
, COUNT(readers.reader_id) AS group_count
FROM readers, take_book WHERE readers.reader_id = take_book.reader_id GROUP BY reader_groups) AS temp_2);
|
462 | Вывести названия книг, которые имеют больше всего экземпляров, выпущенных в 2019 году. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM books, (SELECT
book_id
, COUNT(book_id) AS book_count
FROM instances WHERE YEAR(date_reg) = 2019 GROUP BY book_id) AS temp_1 WHERE temp_1.book_id = books.book_id AND book_count = (SELECT MAX(book_count) FROM (SELECT
book_id
, COUNT(*) AS book_count
FROM instances WHERE YEAR(date_reg) = 2019 GROUP BY book_id) AS temp_2);
|
463 | Вывести номер самой неактивной группы (группы, в которой студенты брали меньше всего книг) и численность этой группы('number of students') |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
temp_1.reader_groups
, c AS 'number of students'
FROM (SELECT
reader_groups
, COUNT(readers.reader_id) AS group_count
FROM readers, take_book
WHERE readers.reader_id = take_book.reader_id GROUP BY reader_groups) AS temp_1, (SELECT
reader_groups
, COUNT(reader_id) AS c
FROM readers GROUP BY reader_groups) AS temp_2
WHERE temp_1.reader_groups = temp_2.reader_groups
AND group_count = (SELECT MIN(group_count)
FROM (SELECT
reader_groups
, COUNT(readers.reader_id) AS group_count
FROM readers, take_book WHERE readers.reader_id = take_book.reader_id GROUP BY reader_groups) AS temp_2);
|
464 | Вывести названия книг, которые читатели брали чаще всего. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT books.name
FROM
books
, instances
, (
SELECT
instance_id
, COUNT(instance_id) AS inst_count
FROM
take_book
GROUP BY
instance_id
HAVING
COUNT(instance_id) = (
SELECT MAX(inst_count)
FROM
(
SELECT COUNT(instance_id) AS inst_count
FROM
take_book
GROUP BY
instance_id
) AS temp_1
)
) AS max_instances
WHERE
instances.book_id = books.book_id
AND instances.instance_id = max_instances.instance_id;
|
465 | Вывести всю информацию о читателях, которые ни разу не брали книги. Использовать ANY. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT * FROM readers WHERE NOT reader_id = ANY(SELECT reader_id FROM take_book);
|
466 | Вывести идентификаторы и имена работников, которые хоть раз регистрировали читателей. В запросе не использовать соединение таблиц. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
worker_id
, full_name
FROM workers
WHERE worker_id = ANY(SELECT worker_id FROM reader_reg);
|
467 | Вывести номера читательских билетов, которые оформлялись работниками со средним профессиональным образованием. Использовать SOME. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT library_card FROM reader_reg WHERE worker_id = SOME(SELECT worker_id FROM workers WHERE education = 'среднее профессиональное');
|
468 | Вывести полные имена читателей, которые зарегистрировались в библиотеке раньше, чем появились все экземпляры книги с идентификатором(book_id) 8. Использовать ALL. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT full_name_r FROM reader_reg, readers WHERE readers.reader_id = reader_reg.reader_id AND date_reg < ALL(SELECT date_reg FROM instances WHERE book_id = 8);
|
469 | Вывести названия и авторов книг, для которых имеется меньше трёх экземпляров. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
name
, author
FROM
books
WHERE
book_id IN (
SELECT book_id
FROM instances
GROUP BY book_id
HAVING COUNT(*) < 3
);
|
470 | Вывести названия книг, все экземпляры которых вышли в один год с выходом книги. В запросе использовать предикат ALL. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT name FROM books AS bk WHERE pub_year = ALL(SELECT YEAR(date_reg) FROM instances WHERE bk.book_id = instances.book_id);
|
471 | Вывести авторов книг, списание экземпляров которых оформлялось работниками со стажем меньше 5 лет. Использовать ANY. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT author FROM instances, books WHERE instances.book_id = books.book_id AND worker_id = ANY(SELECT worker_id FROM workers WHERE work_experience < 5) AND status = 'Списан';
|
472 | Вывести названия книг, которые брали студенты. Использовать ANY. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT name FROM take_book, instances, books WHERE take_book.instance_id = instances.instance_id AND instances.book_id = books.book_id AND take_book.reader_id = ANY(SELECT reader_id FROM readers WHERE occupation = 'студент');
|
473 | Вывести всю информацию о выдаче/приеме экземпляров книг авторства Алексеенко А.В. Использовать предикат IN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT * FROM take_book
WHERE instance_id IN (
SELECT instance_id FROM instances WHERE book_id IN (
SELECT book_id FROM books WHERE author LIKE '%Алексеенко А.В.%'
)
);
|
474 | Вывести названия и жанры книг, экземпляры которых были выданы читателям больше 1 раз. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
books.name
, books.genre
FROM
books
, instances
, take_book
WHERE
books.book_id = instances.book_id
AND instances.instance_id = take_book.instance_id
AND instances.instance_id IN (
SELECT instance_id
FROM take_book
GROUP BY instance_id
HAVING COUNT(instance_id) > 1
);
|
475 | Вывести названия и авторов книг, экземпляры которых были выданы читателям меньше 3 раз. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
books.name
, books.author
FROM
books
, instances
, take_book
WHERE
books.book_id = instances.book_id
AND instances.instance_id = take_book.instance_id
AND books.book_id IN (
SELECT instances.book_id
FROM books, instances, take_book
WHERE
books.book_id = instances.book_id
AND instances.instance_id = take_book.instance_id
GROUP BY instances.book_id
HAVING COUNT(*) < 3
);
|
476 | Вывести названия книг, которые имеют больше 3 экземпляров. Использовать ANY/ |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT name FROM instances, books WHERE books.book_id = instances.book_id AND books.book_id = ANY(SELECT book_id FROM (SELECT
book_id
, COUNT(book_id) AS books_count
FROM instances GROUP BY book_id) AS temp WHERE books_count > 3);
|
477 | Вывести названия книг, которые имеют ровно 2 экземпляра. Использовать ANY. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT name FROM instances, books WHERE books.book_id = instances.book_id AND books.book_id = ANY(SELECT book_id FROM (SELECT
book_id
, COUNT(book_id) AS books_count
FROM instances GROUP BY book_id) AS temp WHERE books_count = 2);
|
478 | Вывести названия книг, которые брали преподаватели. Использовать SOME. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT name FROM readers, take_book, instances, books WHERE readers.reader_id = take_book.reader_id AND take_book.instance_id = instances.instance_id AND instances.book_id = books.book_id AND take_book.reader_id = SOME(SELECT reader_id FROM readers WHERE occupation = 'преподаватель');
|
479 | Для авторов, фамилия которых начинающихся на букву ‘А’, вывести названия залов, в которых расположены их книги. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
author
, reading_rooms.name
FROM reading_rooms, take_book, instances, books WHERE instances.book_id = ANY(SELECT book_id FROM books WHERE LEFT(author, 1) = 'А') AND reading_rooms.hall_number = take_book.hall_number AND take_book.instance_id = instances.instance_id AND instances.book_id = books.book_id;
|
480 | Вывести имена работников, которые выдали больше всего книг во втором зале учебной литературы в период 2019-09-19 по 2020-05-04. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT workers.full_name
FROM
workers
, take_book
, reading_rooms
WHERE
workers.worker_id = take_book.worker_id
AND take_book.hall_number = reading_rooms.hall_number
AND reading_rooms.name LIKE '%№2%'
AND reading_rooms.species = 'учебный'
AND take_book.fixing_date BETWEEN '2019-09-19' AND '2020-05-04'
AND take_book.worker_id IN (
SELECT worker_id
FROM (
SELECT
worker_id
, COUNT(take_book.hall_number) AS hall_count
FROM
take_book
, reading_rooms
WHERE
take_book.hall_number = reading_rooms.hall_number
AND reading_rooms.name LIKE '%№2%'
AND reading_rooms.species = 'учебный'
AND take_book.fixing_date BETWEEN '2019-09-19' AND '2020-05-04'
GROUP BY
take_book.worker_id
) AS temp_2
WHERE temp_2.hall_count = (
SELECT MAX(hall_count)
FROM (
SELECT COUNT(take_book.hall_number) AS hall_count
FROM
take_book
, reading_rooms
WHERE
take_book.hall_number = reading_rooms.hall_number
AND reading_rooms.name LIKE '%№2%'
AND reading_rooms.species = 'учебный'
AND take_book.fixing_date BETWEEN '2019-09-19' AND '2020-05-04'
GROUP BY
reading_rooms.hall_number, take_book.worker_id
) AS temp_3
)
);
|
481 | Вывести полные неповторяющиеся имена и группы студентов, которые хоть раз брали книгу 'Introduction to Nanotechnology'. Использовать ANY. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
full_name_r
, reader_groups
FROM readers, take_book, instances, books WHERE readers.reader_id = take_book.reader_id AND take_book.instance_id = instances.instance_id AND readers.reader_id = ANY(SELECT reader_id FROM readers WHERE occupation = 'студент') AND instances.book_id = ANY(SELECT book_id FROM books WHERE name = 'Introduction to Nanotechnology');
|
482 | Вывести полные неповторяющиеся имена преподаватели с ученой степенью, которые хоть раз брали книгу 'Математика для социологов и экономистов', вывести также саму ученую степень. Для поиска книги использовать предикат ANY. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
full_name_r
, science_degree
FROM readers, take_book, instances, books WHERE readers.reader_id = take_book.reader_id AND take_book.instance_id = instances.instance_id AND readers.reader_id = ANY(SELECT reader_id FROM readers WHERE science_degree IS NOT null) AND instances.book_id = ANY(SELECT book_id FROM books WHERE name = 'Математика для социологов и экономистов');
|
483 | Вывести из таблиц readers, reader_reg ФИО читателя, идентификатор читателя и дату его регистрации. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, r.reader_id
, date_reg
FROM readers AS r INNER JOIN reader_reg AS rr ON r.reader_id = rr.reader_id;
|
484 | Вывести ФИО и должность работников библиотеки, которые ни разу не регистрировали новые экземпляры книг. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, position
FROM workers LEFT OUTER JOIN instances ON workers.worker_id = instances.worker_id WHERE instances.worker_id IS NULL;
|
485 | Вывести ФИО и статус читателей, которые ни разу не брали книгу в библиотеке. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, reader_status
FROM readers LEFT OUTER JOIN take_book
ON readers.reader_id = take_book.reader_id
WHERE take_book.reader_id IS NULL;
|
486 | Посчитать количество экземпляров каждой книги, выпущенной в 2015 году. В запросе использовать INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, COUNT(instance_id)
FROM instances INNER JOIN books ON instances.book_id = books.book_id WHERE pub_year = '2015' GROUP BY name;
|
487 | Вывести для каждого студента сумму его штрафов за задержку книг, книги должны быть взяты читателями после 2019-11-01, упорядочить имена в алфавитном порядке. Если штраф отсутствует, вывести 0, можно использовать COALESCE. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, COALESCE(SUM(fine), 0)
FROM readers INNER JOIN take_book ON readers.reader_id = take_book.reader_id WHERE fixing_date > '2019-11-01' GROUP BY take_book.reader_id ORDER BY full_name_r;
|
488 | Вывести ФИО сотрудника, должность и количество выданных им книг. Выбрать сотрудников с должностью 'директор' или 'библиотекарь'. В запросе использовать соединение INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, position
, COUNT(reader_id)
FROM take_book AS t INNER JOIN workers AS w
ON t.worker_id = w.worker_id
WHERE position = 'директор' OR position = 'библиотекарь'
GROUP BY t.worker_id;
|
489 | Вывести название читального зала, полное имя работника, должность работника и дату выдачи книги для всех операций по выдаче книг, произведённых в период с 2019-01-01 по 2019-12-15. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, full_name
, position
, fixing_date
FROM reading_rooms INNER JOIN take_book ON reading_rooms.hall_number = take_book.hall_number INNER JOIN workers ON take_book.worker_id = workers.worker_id WHERE fixing_date BETWEEN '2019-01-01' AND '2019-12-15';
|
490 | Вывести ФИО и номер телефона читателей, а также название книг, которые они до сих пор не принесли, хоть и формальный день сдачи уже прошел. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, phone
, name
FROM readers
JOIN take_book ON readers.reader_id = take_book.reader_id
JOIN instances USING (instance_id)
JOIN books USING (book_id)
WHERE f_return_date < CURRENT_DATE AND return_date IS NULL;
|
491 | Вывести неповторяющиеся жанры книг и количество выданных за всё время экземпляров для каждого из этих жанров как 'give out'. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
genre
, COUNT(t.instance_id) AS 'give out'
FROM (
books AS b INNER JOIN instances AS i
ON b.book_id = i.book_id
) INNER JOIN take_book AS t
ON i.instance_id = t.instance_id
GROUP BY genre;
|
492 | Вывести из таблиц readers, take_book, books ФИО читателя(full_name_r), дату выдачи книги(fixing_date), название книги(name). Использовать INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name_r
, fixing_date
, name
FROM readers AS r INNER JOIN take_book AS t INNER JOIN instances AS i INNER JOIN books AS b
ON r.reader_id = t.reader_id AND t.instance_id = i.instance_id AND i.book_id = b.book_id;
|
493 | Для всех читальных залов вместимостью больше 40 вывести число раз, когда книгу брал доктор наук. Учитывать только те случаи, когда книгу выдавал работник с высшим образованием. В запросе использовать INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, COUNT(*)
FROM readers INNER JOIN take_book ON readers.reader_id = take_book.reader_id AND science_degree = 'доктор наук' INNER JOIN reading_rooms ON take_book.hall_number = reading_rooms.hall_number AND capacity > 40 INNER JOIN workers ON take_book.worker_id = workers.worker_id AND education = 'высшее' GROUP BY name;
|
494 | Вывести ФИО и идентификатор работников (без повторений), которые ни разу не оформляли экземпляры книг, но выдавали книги читателям с собой. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, workers.worker_id
FROM workers LEFT OUTER JOIN instances
ON workers.worker_id = instances.worker_id
JOIN take_book ON workers.worker_id = take_book.worker_id
WHERE instances.worker_id IS NULL
AND fixing_date <> f_return_date
GROUP BY worker_id;
|
495 | Для всех не списанных книг отечественного производителя вывести число раз, когда книгу брал доктор наук, в запросе использовать INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, COUNT(*)
FROM readers INNER JOIN take_book ON readers.reader_id = take_book.reader_id AND science_degree = 'доктор наук' INNER JOIN instances ON take_book.instance_id = instances.instance_id AND instances.status <> 'Списан' INNER JOIN books ON instances.book_id = books.book_id AND pub_type = 'отечественное' GROUP BY name;
|
496 | Вывести ФИО работника, дату выдачи и название выдаваемой книги, упорядочить данные по возрастанию даты выдачи. Использовать INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, fixing_date
, name
FROM workers AS w INNER JOIN take_book AS t ON w.worker_id = t.worker_id
INNER JOIN instances AS i ON t.instance_id = i.instance_id
INNER JOIN books AS b ON i.book_id = b.book_id
ORDER BY fixing_date ASC;
|
497 | Вывести названия и авторов книг, экземпляры которых были выданы читателям меньше 5 раз. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT DISTINCT
b.name
, b.author
FROM
books AS b
JOIN
instances AS i ON b.book_id = i.book_id
JOIN
(
SELECT tb.instance_id
FROM
take_book AS tb
GROUP BY
tb.instance_id
HAVING
COUNT(tb.instance_id) < 5
) AS t ON i.instance_id = t.instance_id;
|
498 | Вывести ФИО работника, который зарегистрировал максимальное кол-во читателй, кол-во зарегистрированных им читателей(number_of_readers), список идентификаторов читателей(readers) в одну строчку, через запятую, по возрастанию. Использовать INNER JOIN и функцию GROUP_CONCAT(DISTINCT X ORDER BY X ASC/DESC SEPARATOR ', '). |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
full_name
, b AS number_of_readers
, readers
FROM (SELECT
full_name
, COUNT(reader_id) AS b
, GROUP_CONCAT(DISTINCT reader_id ORDER BY reader_id ASC SEPARATOR ', ') AS readers
FROM workers AS w INNER JOIN reader_reg AS r ON w.worker_id = r.worker_id
GROUP BY r.worker_id) AS c
WHERE b = ANY(SELECT MAX(r) FROM (SELECT
worker_id
, COUNT(reader_id) AS r
FROM reader_reg
GROUP BY worker_id) AS c1);
|
499 | Вывести название книги, жанр и число раз, когда не списанную книгу с жанром повесть или рассказ брал кандидат наук, в запросе использовать INNER JOIN. |
CREATE TABLE books (
book_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
author VARCHAR(60) DEFAULT NULL,
name VARCHAR(75) NOT NULL,
genre VARCHAR(45) NOT NULL,
category VARCHAR(40) NOT NULL,
publisher VARCHAR(35) NOT NULL,
pub_year SMALLINT(6) DEFAULT NULL,
pub_type VARCHAR(30) NOT NULL,
);
CREATE TABLE instances (
instance_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
book_id INT(11) NOT NULL,
status VARCHAR(50) DEFAULT NULL,
worker_id INT(11) NOT NULL,
cypher VARCHAR(20) NOT NULL,
date_reg DATE NOT NULL,
write_off_date DATE DEFAULT NULL,
CONSTRAINT R_26 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_1 FOREIGN KEY (book_id) REFERENCES books (book_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE reader_reg (
library_card INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
date_reg DATE NOT NULL,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
CONSTRAINT R_24 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_23 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE readers (
reader_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name_r VARCHAR(35) NOT NULL,
passport VARCHAR(20) NOT NULL,
phone VARCHAR(20) NOT NULL,
science_degree VARCHAR(50) DEFAULT NULL,
occupation VARCHAR(40) NOT NULL,
education_mode VARCHAR(25) DEFAULT NULL,
groups VARCHAR(10) DEFAULT NULL,
status VARCHAR(25) NOT NULL,
);
CREATE TABLE reading_rooms (
hall_number INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
capacity INT(11) NOT NULL,
name VARCHAR(60) NOT NULL,
species VARCHAR(40) NOT NULL,
);
CREATE TABLE take_book (
op_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
worker_id INT(11) NOT NULL,
reader_id INT(11) NOT NULL,
instance_id INT(11) NOT NULL,
fixing_date DATE NOT NULL,
return_date DATE DEFAULT NULL,
f_return_date DATE NOT NULL,
fine FLOAT DEFAULT NULL,
hall_number INT(11) NOT NULL,
CONSTRAINT R_27 FOREIGN KEY (hall_number) REFERENCES reading_rooms (hall_number) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_17 FOREIGN KEY (worker_id) REFERENCES workers (worker_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_18 FOREIGN KEY (reader_id) REFERENCES readers (reader_id) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT R_19 FOREIGN KEY (instance_id) REFERENCES instances (instance_id) ON DELETE CASCADE ON UPDATE CASCADE
);
CREATE TABLE workers (
worker_id INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
full_name VARCHAR(30) NOT NULL,
position VARCHAR(50) DEFAULT NULL,
work_experience SMALLINT(6) DEFAULT NULL,
birthday DATE NOT NULL,
education VARCHAR(30) NOT NULL,
);
| SELECT
name
, genre
, COUNT(*)
FROM readers INNER JOIN take_book
ON readers.reader_id = take_book.reader_id
INNER JOIN instances
ON take_book.instance_id = instances.instance_id
INNER JOIN books
ON instances.book_id = books.book_id
WHERE genre = 'повесть' OR genre = 'рассказ' AND science_degree = 'кандидат наук'
AND instances.status = 'Удовлетворительно'
GROUP BY instances.book_id;
|
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