[User] I want to list all employees who currently manage at least one other employee, showing their full name, email, and the total number of direct reports for each manager.

[Assistant]
SELECT e.employee_id, e.first_name || ' ' || e.last_name AS manager_full_name, e.email, COUNT(r.employee_id) AS direct_report_count
FROM financial_services.employees e
JOIN financial_services.employees r ON e.employee_id = r.manager_id
WHERE e.status = 'Active'
GROUP BY e.employee_id, e.first_name, e.last_name, e.email;

[User] Can you also include the job_title and department of each manager in the result?

[Assistant]
SELECT e.employee_id, e.first_name || ' ' || e.last_name AS manager_full_name, e.email, e.job_title, e.department, COUNT(r.employee_id) AS direct_report_count
FROM financial_services.employees e
JOIN financial_services.employees r ON e.employee_id = r.manager_id
WHERE e.status = 'Active'
GROUP BY e.employee_id, e.first_name, e.last_name, e.email, e.job_title, e.department;

[User] I noticed some managers don't have any reports—that shouldn't be the case. Only show managers who have at least two direct reports.

[Assistant]
SELECT e.employee_id, e.first_name || ' ' || e.last_name AS manager_full_name, e.email, e.job_title, e.department, COUNT(r.employee_id) AS direct_report_count
FROM financial_services.employees e
JOIN financial_services.employees r ON e.employee_id = r.manager_id
WHERE e.status = 'Active'
GROUP BY e.employee_id, e.first_name, e.last_name, e.email, e.job_title, e.department
HAVING COUNT(r.employee_id) >= 2;

[User] Please order the output by the number of direct reports in descending order.

[Assistant]
SELECT e.employee_id, e.first_name || ' ' || e.last_name AS manager_full_name, e.email, e.job_title, e.department, COUNT(r.employee_id) AS direct_report_count
FROM financial_services.employees e
JOIN financial_services.employees r ON e.employee_id = r.manager_id
WHERE e.status = 'Active'
GROUP BY e.employee_id, e.first_name, e.last_name, e.email, e.job_title, e.department
HAVING COUNT(r.employee_id) >= 2
ORDER BY direct_report_count DESC;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE financial_services.accounts (
    account_id character varying(64) NOT NULL, -- unique identifier for the account
    customer_id character varying(64) NOT NULL, -- foreign key linking to the customer
    account_number character varying(128) NOT NULL UNIQUE, -- unique account number visible to customer
    account_type character varying(50) NOT NULL, -- e.g., Checking, Savings, Investment, Loan, Credit Card
    balance numeric(19, 4) NOT NULL DEFAULT 0.00, -- current account balance
    currency character varying(3) NOT NULL, -- currency code (e.g., USD, EUR)
    opened_date date NOT NULL, -- date the account was opened
    status character varying(32) NOT NULL, -- e.g., Open, Closed, Frozen
    interest_rate numeric(5, 4), -- annual interest rate, if applicable
    last_updated_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, -- timestamp of last account update
    PRIMARY KEY (account_id),
    FOREIGN KEY (customer_id) REFERENCES financial_services.customers(customer_id)
)
CREATE TABLE financial_services.transactions (
    transaction_id character varying(64) NOT NULL, -- unique identifier for the transaction
    account_id character varying(64) NOT NULL, -- account involved in the transaction
    related_account_id character varying(64), -- counterpart account for transfers
    transaction_type character varying(50) NOT NULL, -- e.g., Deposit, Withdrawal, Transfer, Payment, Fee, Interest
    amount numeric(19, 4) NOT NULL, -- transaction amount
    currency character varying(3) NOT NULL, -- transaction currency
    transaction_date timestamp NOT NULL, -- exact time of the transaction
    effective_date date NOT NULL, -- date the transaction affects the balance
    description text, -- description or memo of the transaction
    status character varying(32) NOT NULL, -- e.g., Pending, Completed, Failed, Reversed
    reference_number character varying(128), -- external reference if applicable (e.g., check number)
    PRIMARY KEY (transaction_id),
    FOREIGN KEY (account_id) REFERENCES financial_services.accounts(account_id),
    FOREIGN KEY (related_account_id) REFERENCES financial_services.accounts(account_id)
)
CREATE TABLE financial_services.employees (
    employee_id character varying(64) NOT NULL,  -- unique identifier for the employee
    first_name character varying(100) NOT NULL,
    last_name character varying(100) NOT NULL,
    job_title character varying(100) NOT NULL, -- e.g., Teller, Branch Manager, Financial Advisor, Analyst
    department character varying(100), -- e.g., Retail Banking, Wealth Management, IT
    branch_id character varying(64), -- Identifier for the branch they work at (if applicable)
    email character varying(128) NOT NULL UNIQUE,
    phone_extension character varying(20),
    hire_date date NOT NULL,
    termination_date date, -- Date of termination, null if currently employed
    manager_id character varying(64), -- Self-referencing key for manager relationship
    status character varying(32) NOT NULL, -- e.g., Active, Terminated, On Leave
    PRIMARY KEY (employee_id),
    FOREIGN KEY (branch_id) REFERENCES financial_services.branches(branch_id), -- Assuming a branches table exists
    FOREIGN KEY (manager_id) REFERENCES financial_services.employees(employee_id)
)


[User] What is the total revenue generated by ticket sales at the station with ID 'ST101' for the past month?

[Assistant] I'm sorry, but I can't provide information on the revenue generated by ticket sales as this data is not available in the current database table. The table only contains details about station information such as name, location, and platform count. If you have another question or need assistance with something else related to the station data, I'm happy to help.

System:
You are an SQL statement expert and you can refuse the user's question if the question is not related to the table structure. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE train_station_management.stations ( station_id.text, station_name.text, city.text, state_province.text, country_code.text, address.text, timezone.text, number_of_platforms.integer, created_at.timestamp, last_updated_at.timestamp )


[User] Retrieve each game_id alongside the achievement with the highest points, showing its name and points.

[Assistant]
SELECT a.game_id,
       a.name,
       a.points
FROM achievements a
JOIN (
  SELECT game_id,
         MAX(points) AS max_points
  FROM achievements
  GROUP BY game_id
) m ON a.game_id = m.game_id
   AND a.points = m.max_points;

[User] Exclude hidden achievements and only include games where that top achievement has at least 80 points.

[Assistant]
SELECT a.game_id,
       a.name,
       a.points
FROM achievements a
JOIN (
  SELECT game_id,
         MAX(points) AS max_points
  FROM achievements
  WHERE hidden = false
  GROUP BY game_id
) m ON a.game_id = m.game_id
   AND a.points = m.max_points
WHERE a.hidden = false
  AND a.points >= 80
ORDER BY a.points DESC;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE gaming_technology.achievements ( achievement_id uuid PRIMARY KEY, game_id uuid, name text, description text, icon_url text, points int, hidden boolean )


[User] List all claims, including the claim ID, incident date, estimated loss, and the name of the insurance product associated with the policy under which the claim was made.

[Assistant]
SELECT
  c.claim_id,
  c.incident_date,
  c.estimated_loss,
  ip.product_name
FROM insurance.claims AS c
JOIN insurance.policies AS p
  ON c.policy_id = p.policy_id
JOIN insurance.insurance_products AS ip
  ON p.product_id = ip.product_id;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE insurance.customers ( customer_id text, first_name text, last_name text, date_of_birth date, ssn_hash text, address_line1 text, address_line2 text, city text, state text, zip_code text, country text, phone_number text, email text, created_at timestamp, updated_at timestamp, status text )
CREATE TABLE insurance.claims (
    claim_id character varying(64) NOT NULL, -- unique identifier for the claim
    policy_id character varying(64) NOT NULL, -- identifier of the policy under which the claim is made (FK to policies)
    customer_id character varying(64) NOT NULL, -- identifier of the customer making the claim (FK to customers)
    incident_date timestamp NOT NULL, -- date and time of the incident leading to the claim
    reported_date timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, -- date the claim was reported
    description text NOT NULL, -- detailed description of the incident and claim
    estimated_loss numeric(15, 2), -- initial estimated cost of the loss
    status character varying(30) NOT NULL, -- e.g., Filed, Processing, Under Review, Approved, Denied, Settled
    settlement_amount numeric(15, 2), -- final amount paid out
    settlement_date date,
    claim_handler_id character varying(64), -- identifier for the employee handling the claim (FK to employees/adjusters)
    police_report_number character varying(100),
    PRIMARY KEY (claim_id)
)
CREATE TABLE insurance.insurance_products (
    product_id character varying(64) NOT NULL, -- unique identifier for the insurance product
    product_name character varying(150) NOT NULL, -- name of the insurance product (e.g., 'Comprehensive Auto Insurance')
    product_type character varying(50) NOT NULL, -- category like 'Auto', 'Home', 'Life', 'Health', 'Travel'
    description text, -- detailed description of the product
    base_premium numeric(10, 2) NOT NULL, -- starting premium before adjustments
    coverage_details text, -- details about what is covered (could be JSON or structured text)
    underwriting_rules text, -- rules used for assessing risk and eligibility
    is_active boolean NOT NULL DEFAULT true, -- whether the product is currently offered
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at timestamp,
    PRIMARY KEY (product_id)
)
CREATE TABLE insurance.claim_documents ( document_id character varying(64) NOT NULL, claim_id character varying(64) NOT NULL, document_type character varying(50) NOT NULL, file_name character varying(255) NOT NULL, file_path character varying(512) NOT NULL, file_size_bytes integer, mime_type character varying(100), uploaded_by character varying(64), uploaded_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, description text, PRIMARY KEY (document_id) )


[User] List NFT collections deployed after block number 10000000 with more than 500 tokens, showing contract_address, name, and token_count.

[Assistant]
SELECT contract_address, name, token_count
FROM nft_collections
WHERE deploy_block_number > 10000000
  AND token_count > 500;

[User] Join with nft_metadata to calculate the average rarity_score per collection.

[Assistant]
SELECT nc.contract_address,
       nc.name,
       nc.token_count,
       AVG(nm.rarity_score) AS avg_rarity
FROM nft_collections nc
LEFT JOIN nft_metadata nm
  ON nc.contract_address = nm.contract_address
WHERE nc.deploy_block_number > 10000000
  AND nc.token_count > 500
GROUP BY nc.contract_address, nc.name, nc.token_count;

[User] Filter collections with average rarity_score above 80 and include floor_price.

[Assistant]
SELECT nc.contract_address,
       nc.name,
       nc.token_count,
       AVG(nm.rarity_score) AS avg_rarity,
       nc.floor_price
FROM nft_collections nc
LEFT JOIN nft_metadata nm
  ON nc.contract_address = nm.contract_address
WHERE nc.deploy_block_number > 10000000
  AND nc.token_count > 500
GROUP BY nc.contract_address, nc.name, nc.token_count, nc.floor_price
HAVING AVG(nm.rarity_score) > 80;

[User] Order the results by floor_price descending and limit to the top 5 collections.

[Assistant]
SELECT nc.contract_address,
       nc.name,
       nc.token_count,
       AVG(nm.rarity_score) AS avg_rarity,
       nc.floor_price
FROM nft_collections nc
LEFT JOIN nft_metadata nm
  ON nc.contract_address = nm.contract_address
WHERE nc.deploy_block_number > 10000000
  AND nc.token_count > 500
GROUP BY nc.contract_address, nc.name, nc.token_count, nc.floor_price
HAVING AVG(nm.rarity_score) > 80
ORDER BY CAST(nc.floor_price AS numeric) DESC
LIMIT 5;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE token_metas ( block_timestamp timestamp, block_number bigint, transaction_hash varchar, transaction_index bigint, from_address varchar, contract_address varchar, symbol varchar, total_supply varchar, name varchar, decimals bigint, is_erc20 integer, is_erc721 integer, is_erc1155 integer, is_proxy integer, extra_info varchar, pk integer )
CREATE TABLE erc1155_approval_for_all ( block_number bigint NOT NULL, block_timestamp timestamp(3) NOT NULL, transaction_index integer NOT NULL, transaction_hash varchar(66) NOT NULL, log_index integer NOT NULL, contract_address varchar(42) NOT NULL )
CREATE TABLE erc20_balances ( block_number.bigint, contract_address.text, wallet_address.text, amount.text, pk.text )
CREATE TABLE nft_holder_historical ( block_number.bigint, contract_address.text, wallet_address.text, token_id.text, contract_type.text, amount.text, pk.integer )
CREATE TABLE sui_coins ( object_id text, status text, coin_type text, balance text, owner text )
CREATE TABLE sui_coins_metadata ( object_id varchar, coin_type varchar, status varchar, decimals bigint, description varchar, icon_url varchar, symbol varchar, name varchar )
CREATE TABLE sui_nfts ( object_id varchar, status varchar, collection_type varchar, package_id varchar, previous_transaction varchar, display varchar, owner varchar, name varchar )
CREATE TABLE nft_metadata ( blockchain text, contract_address text, token_id text, contract_name text, erc_type text, amount bigint, minter text, owner text, mint_block_number bigint, mint_time bigint, mint_transaction_hash text, mint_price text, token_uri text, metadata text, name text, image_uri text, traits text, updated_at bigint, status text, rarity_score real, rarity_rank integer, unique_attribute_count integer, pk integer )
CREATE TABLE nft_collections (
    blockchain varchar NOT NULL, -- blockchain fields for the functionType  in contract
    contract_address varchar NOT NULL, -- Contract address(with bloom filter)
    name varchar NOT NULL, -- name fields for the functionType  in contract
    symbol varchar NOT NULL, -- symbol fields for the functionType  in contract
    deploy_block_number bigint NOT NULL, -- deploy_block_number fields for the functionType  in contract
    deploy_block_time bigint NOT NULL, -- deploy_block_time fields for the functionType  in contract
    erc_type varchar NOT NULL, -- The type of token
    owner varchar NOT NULL, -- owner fields for the functionType  in contract
    traits varchar NOT NULL, -- traits fields for the functionType  in contract
    description varchar NOT NULL, -- description fields for the functionType  in contract
    slug varchar NOT NULL, -- slug fields for the functionType  in contract
    media_info varchar NOT NULL, -- media_info fields for the functionType  in contract
    image_url varchar NOT NULL, -- image_url fields for the functionType  in contract
    banner_image_url varchar NOT NULL, -- banner_image_url fields for the functionType  in contract
    updated_at bigint NOT NULL, -- updated_at fields for the functionType  in contract
    banner varchar NOT NULL, -- banner fields for the functionType  in contract
    token_count bigint NOT NULL, -- token_count fields for the functionType  in contract
    floor_price varchar NOT NULL, -- floor_price fields for the functionType  in contract
    floor_price_symbol varchar NOT NULL, -- floor_price_symbol fields for the functionType  in contract
    floor_price_contract varchar NOT NULL, -- floor_price_contract fields for the functionType  in contract
    pk integer NOT NULL  -- Partition key for the table(floor(deploy_block_time / 1000 / 86400 / 30))
)
CREATE TABLE token_prices_latest (
    blockchain varchar(36) NOT NULL, -- blockchain fields for the functionType  in contract
    address varchar(42) NOT NULL, -- address fields for the functionType  in contract
    decimals bigint NOT NULL, -- decimals fields for the functionType  in contract
    symbol varchar(36) NOT NULL, -- symbol fields for the functionType  in contract
    price real NOT NULL, -- price fields for the functionType  in contract
    timestamp timestamp(6) NOT NULL  -- timestamp fields for the functionType  in contract
)
CREATE TABLE erc20_approval ( block_number bigint, block_timestamp timestamp, transaction_index integer, transaction_hash text, log_index integer, contract_address text, pk integer )
CREATE TABLE token_balances ( block_number bigint, block_timestamp timestamp, tick text, wallet_address text, total_supply decimal, amount decimal )
CREATE TABLE token_info (
    block_timestamp timestamp(3) NOT NULL, -- Timestamp of the block containing the inscription (matches block_timestamp in transactions table)
    block_number bigint NOT NULL, -- Block number containing the inscription (matches block_number in transactions table)
    tx_index integer NOT NULL, -- Index of the transaction containing the inscription (matches transaction_index in transactions table)
    tx_hash varchar(66) NOT NULL, -- Unique identifier of the transaction containing the inscription (matches hash in transactions table)
    tick varchar NOT NULL, -- Token tick
    max_supply decimal(38,0) NOT NULL, -- Max supply
    lim decimal(38,0) NOT NULL, -- Limit of each mint
    wlim decimal(38,0) NOT NULL, -- Limit of each address can maximum mint
    dec integer NOT NULL, -- Decimal for minimum divie
    creator varchar(42) NOT NULL  -- Address originating the inscription (matches from_address in transactions table)
)
CREATE TABLE mud_holesky_redstone ( address.text, table_id.text, key_bytes.text, key0.text, key1.text, static_data.text, encoded_lengths.text, dynamic_data.text, is_deleted.boolean, block_number.bigint, log_index.bigint )
CREATE TABLE token_activities_bitcoin ( block_timestamp timestamp, block_number bigint, tx_index integer, tx_hash text, log_index integer, type text, tick text, id text, amt decimal, from_address text, to_address text )
CREATE TABLE token_activities_avalanche ( block_timestamp timestamp(3) NOT NULL, block_number bigint NOT NULL, tx_index integer NOT NULL, tx_hash varchar(66) NOT NULL, log_index integer NOT NULL, type varchar(20) NOT NULL, tick varchar(255) NOT NULL, id varchar(255) NOT NULL, amt decimal(38,0) NOT NULL, from_address varchar(42) NOT NULL, to_address varchar(42) NOT NULL )
CREATE TABLE token_balances_avalanche ( block_number bigint, block_timestamp timestamp, tick text, wallet_address text, total_supply decimal, amount decimal )
CREATE TABLE token_info_avalanche ( block_timestamp timestamp, block_number bigint, tx_index integer, tx_hash text, tick text, max_supply decimal, lim decimal, wlim decimal, dec integer, creator text, minted decimal, holders decimal, txs decimal, updated_timestamp timestamp, completed_timestamp timestamp, id text )


[User] Find all nodes that were last seen in the last 30 days and have port numbers between 8000 and 9000.

[Assistant] SELECT node_id, ip_address, port FROM blockchain.nodes WHERE last_seen >= NOW() - INTERVAL '30 days' AND port BETWEEN 8000 AND 9000

[User] Can you also show the count of transactions sent from wallet addresses that share the same IP as these nodes?

[Assistant] This query isn't possible with the current schema as there's no relationship between nodes IP addresses and wallet addresses.

[User] Then just show me nodes that share the same IP address along with how many nodes share each IP.

[Assistant] SELECT ip_address, COUNT(*) as node_count FROM blockchain.nodes GROUP BY ip_address HAVING COUNT(*) > 1

[User] Now filter this to only show IP addresses with more than 3 nodes and include the earliest and latest last_seen timestamps.

[Assistant] SELECT ip_address, COUNT(*) as node_count, MIN(last_seen) as earliest_seen, MAX(last_seen) as latest_seen FROM blockchain.nodes GROUP BY ip_address HAVING COUNT(*) > 3

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE blockchain.transactions ( transaction_id text, block_id text, sender_address text, receiver_address text, amount numeric, timestamp timestamp, signature text )
CREATE TABLE blockchain.nodes ( node_id text, ip_address text, port integer, last_seen timestamp )
CREATE TABLE blockchain.wallets ( wallet_id text, user_id text, address_id text, private_key text )
CREATE TABLE blockchain.smart_contracts ( contract_id text, creator_address text, code text, timestamp timestamp )


[User] For each driver, find the other driver whose license_expiry_date is the next one after theirs. Show both IDs, names and their expiry dates.

[Assistant]
SELECT
  d1.driver_id            AS driver_id,
  d1.first_name || ' ' || d1.last_name     AS driver_name,
  d1.license_expiry_date  AS expiry_date,
  d2.driver_id            AS next_driver_id,
  d2.first_name || ' ' || d2.last_name     AS next_driver_name,
  d2.license_expiry_date  AS next_expiry_date
FROM transportation.drivers d1
JOIN transportation.drivers d2
  ON d2.license_expiry_date = (
    SELECT MIN(d3.license_expiry_date)
    FROM transportation.drivers d3
    WHERE d3.license_expiry_date > d1.license_expiry_date
  );

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE transportation.drivers ( driver_id text, employee_id text, first_name text, last_name text, license_number text, license_expiry_date date, contact_number text, email text, hire_date date, status text )


[User] List all invoices that were paid within 7 days of their issue date. Show invoice number, issue date, payment date, and total amount.

[Assistant] SELECT invoice_number, issue_date, payment_date, total_amount FROM legal_services.invoices WHERE status = 'Paid' AND payment_date IS NOT NULL AND (payment_date::DATE - issue_date) <= 7;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE legal_services.lawyers ( lawyer_id.text, first_name.text, last_name.text, bar_number.text, firm_id.text, email.text, phone.text, specialization.text, hire_date.timestamp, is_partner.boolean )
CREATE TABLE legal_services.invoices ( invoice_id text, invoice_number text, client_id text, case_id text, issue_date date, due_date date, total_amount numeric, amount_paid numeric, status text, payment_date timestamp, notes text, created_at timestamp )


[User] What is the total market cap for all tokens listed on the 'Polygon' chain?

[Assistant] SELECT SUM(market_cap) FROM token_dexpool_info WHERE chain = 'Polygon';

[User] Only sum the market cap for tokens on 'Polygon' that have a 24-hour volume greater than 500000.

[Assistant] SELECT SUM(market_cap) FROM token_dexpool_info WHERE chain = 'Polygon' AND volume_24h > 500000;

[User] Also show the number of unique tokens that meet these criteria.

[Assistant] SELECT COUNT(DISTINCT token_symbol), SUM(market_cap) FROM token_dexpool_info WHERE chain = 'Polygon' AND volume_24h > 500000;

[User] Can you show the total market cap and token count for *each* chain that meets these volume criteria, ordered by total market cap descending?

[Assistant] SELECT chain, COUNT(DISTINCT token_symbol) AS token_count, SUM(market_cap) AS total_market_cap FROM token_dexpool_info WHERE volume_24h > 500000 GROUP BY chain ORDER BY total_market_cap DESC;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE token_dexpool_info ( pair_address character varying(512) NOT NULL, -- the id of dexpool token_name character varying(100) NOT NULL, -- the name of the token in the dexpool token_symbol character varying(100) NOT NULL, -- the token's symbol chain text, -- the chain that the dexpool resides price double precision, -- the current price of the token price_change_percentage_1h double precision, -- change in value divided by the absolute price value of the original token price in 1 hour price_change_percentage_6h double precision, -- change in value divided by the absolute price value of the original token price in 6 hours price_change_percentage_24h double precision, -- change in value divided by the absolute price value of the original token price in 24 hours makers_24h double precision, -- the makers of the dex pool in 24 hours volume_24h double precision, -- the trade volume of the dex pool in 24 hours liquidity double precision, -- the liquidity of the dex pool market_cap double precision, -- the market cap of the token trend_rank bigint, -- the rank of token in the dex pool of recent trending, value 1 expresses the most popular token. ,PRIMARY KEY (pair_address, chain) )


[User] Provide a count of notifications, separated by whether they have been read or not.

[Assistant] SELECT CASE WHEN T1.read_at IS NULL THEN 'Unread' ELSE 'Read' END, count(T1.notification_id) FROM trading_platform.notifications AS T1 GROUP BY CASE WHEN T1.read_at IS NULL THEN 'Unread' ELSE 'Read' END

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE trading_platform.notifications ( notification_id.text, user_id.text, message.text, sent_at.timestamp, read_at.timestamp )


[User] Which employees have verified more than 5 documents in the last 30 days? Return the employee's full name, department, and the number of verifications.

[Assistant]
SELECT e.first_name || ' ' || e.last_name AS full_name, e.department, COUNT(d.document_id) AS verification_count
FROM government_services.documents d
JOIN government_services.employees e ON d.verified_by_employee_id = e.employee_id
WHERE d.verification_status = 'Verified'
  AND d.verification_timestamp >= now() - interval '30 days'
GROUP BY e.first_name, e.last_name, e.department
HAVING COUNT(d.document_id) > 5;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE government_services.services ( service_id character varying(64) NOT NULL, agency_id character varying(64) NOT NULL, service_name character varying(255) NOT NULL, description text, category character varying(100), eligibility_criteria text, standard_fee numeric(10, 2) DEFAULT 0.00, average_processing_time_days integer, is_active boolean DEFAULT true, online_application_url character varying(255), PRIMARY KEY (service_id) )
CREATE TABLE government_services.applications ( application_id character varying(64) NOT NULL, citizen_id character varying(64) NOT NULL, service_id character varying(64) NOT NULL, submitted_at timestamp NOT NULL, status character varying(50) NOT NULL, last_updated_at timestamp NOT NULL, assigned_employee_id character varying(64), decision_date date, notes text, reference_number character varying(100) UNIQUE, PRIMARY KEY (application_id) )
CREATE TABLE government_services.documents ( document_id character varying(64) NOT NULL, application_id character varying(64), citizen_id character varying(64) NOT NULL, document_type character varying(100) NOT NULL, file_reference text NOT NULL, upload_timestamp timestamp NOT NULL, expiry_date date, verification_status character varying(30) DEFAULT 'Pending', verified_by_employee_id character varying(64), verification_timestamp timestamp, PRIMARY KEY (document_id) )
CREATE TABLE government_services.employees ( employee_id character varying(64) NOT NULL, agency_id character varying(64) NOT NULL, first_name character varying(100) NOT NULL, last_name character varying(100) NOT NULL, job_title character varying(150) NOT NULL, department character varying(100), work_email character varying(128) NOT NULL UNIQUE, work_phone character varying(32), hire_date date NOT NULL, termination_date date, access_level character varying(50), manager_employee_id character varying(64), PRIMARY KEY (employee_id) )
CREATE TABLE government_services.appointments ( appointment_id character varying(64) NOT NULL, citizen_id character varying(64) NOT NULL, employee_id character varying(64), location_id character varying(64), service_id character varying(64), scheduled_start_time timestamp NOT NULL, scheduled_end_time timestamp, purpose text NOT NULL, status character varying(30) NOT NULL, booking_method character varying(50), created_at timestamp NOT NULL, notes text, PRIMARY KEY (appointment_id) )


[User] Please show me all locations that do not have a state or province recorded. Include the location name, city, and country.

[Assistant]
SELECT name, city, country
FROM transportation.locations
WHERE state_province IS NULL OR state_province = '';

[User] For these locations, also include their location_id and type.

[Assistant]
SELECT location_id, name, type, city, country
FROM transportation.locations
WHERE state_province IS NULL OR state_province = '';

[User] Could you additionally list any routes for which these locations are either the origin or the destination? Show the location name, route number, and specify if the location is origin or destination.

[Assistant]
SELECT l.name, r.route_number,
  CASE
    WHEN r.origin_location_id = l.location_id THEN 'origin'
    WHEN r.destination_location_id = l.location_id THEN 'destination'
  END AS role
FROM transportation.locations l
JOIN transportation.routes r
  ON r.origin_location_id = l.location_id OR r.destination_location_id = l.location_id
WHERE l.state_province IS NULL OR l.state_province = '';

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE transportation.routes ( route_id text PRIMARY KEY, route_number text, description text, origin_location_id text, destination_location_id text, distance_km numeric, estimated_duration_minutes int, type text )
CREATE TABLE transportation.locations ( location_id character varying(64) NOT NULL, name character varying(255) NOT NULL, type character varying(64) NOT NULL, address_line1 character varying(255), city character varying(128), state_province character varying(128), postal_code character varying(32), country character varying(64) NOT NULL, latitude numeric(9, 6), longitude numeric(9, 6), timezone character varying(64), PRIMARY KEY (location_id) )
CREATE TABLE transportation.bookings ( booking_id.text, passenger_id.text, trip_id.text, seat_number.text, booking_time.timestamp, status.text, fare.numeric, payment_transaction_id.text, special_requests.text )


[User] Find all vehicles that share the same make and model but were manufactured in different years. Show both vehicle IDs, the make, model, and their respective years.

[Assistant]
SELECT v1.vehicle_id AS vehicle1_id,
       v2.vehicle_id AS vehicle2_id,
       v1.make,
       v1.model,
       v1.year AS year1,
       v2.year AS year2
FROM transportation.vehicles v1
JOIN transportation.vehicles v2
  ON v1.make = v2.make
  AND v1.model = v2.model
  AND v1.year <> v2.year
  AND v1.vehicle_id < v2.vehicle_id;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE transportation.vehicles ( vehicle_id.text, license_plate.text, vin.text, make.text, model.text, year.integer, type.text, capacity.integer, fuel_type.text, status.text, depot_id.text, acquisition_date.date )


[User] Show me the record_id, patient_id, prescription_id, medication_id, start_date, and the systolic blood pressure from the associated medical record for all prescriptions.

[Assistant]
SELECT p.prescription_id,
       p.medication_id,
       p.start_date,
       m.record_id,
       m.patient_id,
       (m.vitals->'blood_pressure'->>'systolic')::int AS systolic_bp
FROM healthcare.prescriptions p
JOIN healthcare.medical_records m
  ON p.record_id = m.record_id;

[User] Actually, only include those where the systolic blood pressure is greater than 140.

[Assistant]
SELECT p.prescription_id,
       p.medication_id,
       p.start_date,
       m.record_id,
       m.patient_id,
       (m.vitals->'blood_pressure'->>'systolic')::int AS systolic_bp
FROM healthcare.prescriptions p
JOIN healthcare.medical_records m
  ON p.record_id = m.record_id
WHERE (m.vitals->'blood_pressure'->>'systolic')::int > 140;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE healthcare.medical_records ( record_id character varying(64) NOT NULL, patient_id character varying(64) NOT NULL, appointment_id character varying(64) UNIQUE, doctor_id character varying(64) NOT NULL, record_date timestamp with time zone NOT NULL, chief_complaint text, present_illness_history text, past_medical_history text, physical_examination_notes text, assessment text, treatment_plan text, vitals jsonb, created_at timestamp with time zone NOT NULL DEFAULT current_timestamp, PRIMARY KEY (record_id) )
CREATE TABLE healthcare.prescriptions ( prescription_id character varying(64) NOT NULL, record_id character varying(64) NOT NULL, patient_id character varying(64) NOT NULL, doctor_id character varying(64) NOT NULL, medication_id character varying(64) NOT NULL, dosage character varying(100) NOT NULL, frequency character varying(100) NOT NULL, route character varying(50), start_date date NOT NULL, end_date date, quantity_dispensed numeric(10,2), refills_allowed integer NOT NULL DEFAULT 0, prescription_date timestamp with time zone NOT NULL DEFAULT current_timestamp, PRIMARY KEY (prescription_id) )


[User] Find cases where an address received tokens in one transfer and then sent tokens in another. List the receive transfer_id, the send transfer_id, the address, and both transfer values.

[Assistant]
SELECT recv.transfer_id AS receive_transfer_id,
       send.transfer_id AS send_transfer_id,
       recv.to_address AS address,
       recv.value       AS received_value,
       send.value       AS sent_value
FROM web3.token_transfers recv
JOIN web3.token_transfers send
  ON recv.to_address = send.from_address;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE web3.token_transfers (
    transfer_id character varying(64) NOT NULL,  -- unique identifier for the transfer
    token_id character varying(64) NOT NULL, -- identifier of the token being transferred
    from_address character varying(128) NOT NULL, -- address of the sender
    to_address character varying(128) NOT NULL, -- address of the receiver
    value numeric(38,14) NOT NULL, -- amount of tokens transferred
    transaction_id character varying(64) NOT NULL, -- identifier of the transaction containing the transfer
    log_index integer NOT NULL, -- index of the transfer log in the transaction
    PRIMARY KEY (transfer_id)
)


[User] What are the fuel consumption rates per hour for the Boeing 747-8 model?

[Assistant] I'm sorry, but I can't provide information on the fuel consumption rates for the Boeing 747-8 model as this data is not included in the aircraft_models table. The table contains details such as model name, manufacturer, passenger capacity, and other specifications, but fuel consumption data is not available. If you have another question or need assistance with something else related to the table, I'm happy to help.

System:
You are an SQL statement expert and you can refuse the user's question if the question is not related to the table structure. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE manufacturing.aircraft_models ( model_id.text, model_name.text, manufacturer.text, passenger_capacity.integer, max_range_km.integer, engine_type.text, wingspan_m.numeric, status.text, first_flight_date.date )


[User] Show all documents uploaded in 2024 along with the citizen's full name and the reference number of the associated application.

[Assistant]
SELECT d.document_id, d.upload_timestamp, c.first_name || ' ' || c.last_name AS citizen_full_name, a.reference_number
FROM government_services.documents d
JOIN government_services.citizens c ON d.citizen_id = c.citizen_id
JOIN government_services.applications a ON d.application_id = a.application_id
WHERE d.upload_timestamp >= '2024-01-01' AND d.upload_timestamp < '2025-01-01';

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE government_services.agencies ( agency_id character varying(64) NOT NULL, agency_name character varying(255) NOT NULL, jurisdiction_level character varying(50) NOT NULL, primary_contact_email character varying(128), main_phone_number character varying(32), website_url character varying(255), established_date date, parent_agency_id character varying(64), PRIMARY KEY (agency_id) )
CREATE TABLE government_services.services (
    service_id character varying(64) NOT NULL, -- unique identifier for the service
    agency_id character varying(64) NOT NULL, -- FK to agencies table
    service_name character varying(255) NOT NULL, -- name of the service (e.g., Driver's License Renewal)
    description text,
    category character varying(100), -- e.g., Licensing, Benefits, Taxation, Permits
    eligibility_criteria text, -- description of who is eligible
    standard_fee numeric(10, 2) DEFAULT 0.00, -- typical fee for the service
    average_processing_time_days integer, -- estimated processing time
    is_active boolean DEFAULT true, -- whether the service is currently offered
    online_application_url character varying(255),
    PRIMARY KEY (service_id)
)
CREATE TABLE government_services.applications (
    application_id character varying(64) NOT NULL, -- unique identifier for the application
    citizen_id character varying(64) NOT NULL, -- FK to citizens table
    service_id character varying(64) NOT NULL, -- FK to services table
    submitted_at timestamp NOT NULL, -- time the application was submitted
    status character varying(50) NOT NULL, -- e.g., Submitted, Processing, Approved, Rejected, Pending Info
    last_updated_at timestamp NOT NULL, -- time the status or details last changed
    assigned_employee_id character varying(64), -- FK to employees table (optional)
    decision_date date, -- date when a final decision was made
    notes text, -- internal notes or citizen-provided comments
    reference_number character varying(100) UNIQUE, -- publicly visible reference number
    PRIMARY KEY (application_id)
)
CREATE TABLE government_services.documents ( document_id text PRIMARY KEY, application_id text, citizen_id text, document_type text, file_reference text, upload_timestamp timestamp, expiry_date date, verification_status text, verified_by_employee_id text, verification_timestamp timestamp )
CREATE TABLE government_services.employees (
    employee_id character varying(64) NOT NULL, -- unique identifier for the government employee
    agency_id character varying(64) NOT NULL, -- FK to agencies table
    first_name character varying(100) NOT NULL,
    last_name character varying(100) NOT NULL,
    job_title character varying(150) NOT NULL,
    department character varying(100),
    work_email character varying(128) NOT NULL UNIQUE,
    work_phone character varying(32),
    hire_date date NOT NULL,
    termination_date date, -- null if currently employed
    access_level character varying(50), -- Role or permission level
    manager_employee_id character varying(64), -- FK to self for reporting structure
    PRIMARY KEY (employee_id)
)
CREATE TABLE government_services.appointments ( appointment_id character varying(64) NOT NULL, citizen_id character varying(64) NOT NULL, employee_id character varying(64), location_id character varying(64), service_id character varying(64), scheduled_start_time timestamp NOT NULL, scheduled_end_time timestamp, purpose text NOT NULL, status character varying(30) NOT NULL, booking_method character varying(50), created_at timestamp NOT NULL, notes text, PRIMARY KEY (appointment_id) )


[User] List the full name (first name and last name) of all citizens who have uploaded documents whose expiry date is in the past.

[Assistant] SELECT DISTINCT T1.first_name, T1.last_name FROM government_services.citizens AS T1 INNER JOIN government_services.documents AS T2 ON T1.citizen_id = T2.citizen_id WHERE T2.expiry_date < CURRENT_DATE;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE government_services.citizens ( citizen_id text PRIMARY KEY, national_id_number text, first_name text, last_name text, date_of_birth date, gender text, primary_address text, contact_email text, contact_phone text, registration_date timestamp, is_verified boolean )
CREATE TABLE government_services.agencies ( agency_id text PRIMARY KEY, agency_name text, jurisdiction_level text, primary_contact_email text, main_phone_number text, website_url text, established_date date, parent_agency_id text )
CREATE TABLE government_services.documents ( document_id text PRIMARY KEY, application_id text, citizen_id text, document_type text, file_reference text, upload_timestamp timestamp, expiry_date date, verification_status text, verified_by_employee_id text, verification_timestamp timestamp )
CREATE TABLE government_services.payments ( payment_id text PRIMARY KEY, application_id text, citizen_id text, service_id text, amount numeric, currency text, payment_method text, payment_provider_reference text, payment_timestamp timestamp, status text, notes text )
CREATE TABLE government_services.service_locations ( location_id text PRIMARY KEY, agency_id text, location_name text, address text, city text, state text, postal_code text, latitude numeric, longitude numeric, operating_hours text, contact_phone text, is_accessible boolean )
CREATE TABLE government_services.appointments ( appointment_id text PRIMARY KEY, citizen_id text, employee_id text, location_id text, service_id text, scheduled_start_time timestamp, scheduled_end_time timestamp, purpose text, status text, booking_method text, created_at timestamp, notes text )


[User] List the first and last names of employees and the full name of the citizens for whom they have scheduled appointments.

[Assistant] SELECT T1.first_name ,  T1.last_name ,  T3.first_name ,  T3.last_name FROM government_services.employees AS T1 JOIN government_services.appointments AS T2 ON T1.employee_id  =  T2.employee_id JOIN government_services.citizens AS T3 ON T2.citizen_id  =  T3.citizen_id

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE government_services.citizens ( citizen_id text PRIMARY KEY, national_id_number text, first_name text, last_name text, date_of_birth date, gender text, primary_address text, contact_email text, contact_phone text, registration_date timestamp, is_verified boolean )
CREATE TABLE government_services.agencies ( agency_id text PRIMARY KEY, agency_name text, jurisdiction_level text, primary_contact_email text, main_phone_number text, website_url text, established_date date, parent_agency_id text )
CREATE TABLE government_services.services ( service_id text PRIMARY KEY, agency_id text, service_name text, description text, category text, eligibility_criteria text, standard_fee numeric, average_processing_time_days int, is_active boolean, online_application_url text )
CREATE TABLE government_services.applications ( application_id text PRIMARY KEY, citizen_id text, service_id text, submitted_at timestamp, status text, last_updated_at timestamp, assigned_employee_id text, decision_date date, notes text, reference_number text )
CREATE TABLE government_services.documents ( document_id text PRIMARY KEY, application_id text, citizen_id text, document_type text, file_reference text, upload_timestamp timestamp, expiry_date date, verification_status text, verified_by_employee_id text, verification_timestamp timestamp )
CREATE TABLE government_services.payments ( payment_id text PRIMARY KEY, application_id text, citizen_id text, service_id text, amount numeric, currency text, payment_method text, payment_provider_reference text, payment_timestamp timestamp, status text, notes text )
CREATE TABLE government_services.employees ( employee_id text PRIMARY KEY, agency_id text, first_name text, last_name text, job_title text, department text, work_email text, work_phone text, hire_date date, termination_date date, access_level text, manager_employee_id text )
CREATE TABLE government_services.appointments ( appointment_id text PRIMARY KEY, citizen_id text, employee_id text, location_id text, service_id text, scheduled_start_time timestamp, scheduled_end_time timestamp, purpose text, status text, booking_method text, created_at timestamp, notes text )
CREATE TABLE government_services.notifications ( notification_id text PRIMARY KEY, citizen_id text, application_id text, message_subject text, message_body text, channel text, sent_at timestamp, status text, related_entity_type text, related_entity_id text )


[User] Show me all patients who have been prescribed medications with dosage greater than 100mg, along with their full names and the medication details, including the prescribing doctor's last name.

[Assistant] SELECT p.first_name, p.last_name, m.medication_name, m.generic_name, pr.dosage, d.last_name AS doctor_last_name FROM healthcare.patients p JOIN healthcare.prescriptions pr ON p.patient_id = pr.patient_id JOIN healthcare.medications m ON pr.medication_id = m.medication_id JOIN healthcare.doctors d ON pr.doctor_id = d.doctor_id WHERE pr.dosage LIKE '%100mg%' OR CAST(SUBSTRING(pr.dosage FROM '([0-9]+)') AS INTEGER) > 100;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE healthcare.patients (
    patient_id character varying(64) NOT NULL,  -- unique identifier for the patient
    first_name character varying(100) NOT NULL, -- patient's first name
    last_name character varying(100) NOT NULL, -- patient's last name
    date_of_birth date NOT NULL, -- patient's date of birth
    gender character varying(10), -- patient's gender (e.g., Male, Female, Other)
    address text, -- patient's home address
    phone_number character varying(20), -- patient's phone number
    email character varying(128) UNIQUE, -- patient's email address
    emergency_contact_name character varying(200), -- name of emergency contact
    emergency_contact_phone character varying(20), -- phone number of emergency contact
    created_at timestamp with time zone NOT NULL DEFAULT current_timestamp, -- record creation time
    updated_at timestamp with time zone NOT NULL DEFAULT current_timestamp, -- record last update time
    PRIMARY KEY (patient_id)
)
CREATE TABLE healthcare.medical_records (
    record_id character varying(64) NOT NULL,  -- unique identifier for the medical record entry
    patient_id character varying(64) NOT NULL, -- FK to patients table
    appointment_id character varying(64) UNIQUE, -- FK to appointments table (can be null if record not tied to specific appt)
    doctor_id character varying(64) NOT NULL, -- FK to doctors table (doctor creating the record)
    record_date timestamp with time zone NOT NULL, -- date the record/observation was made
    chief_complaint text, -- patient's primary reason for visit
    present_illness_history text, -- detailed history of the current issue
    past_medical_history text, -- relevant past conditions/surgeries
    physical_examination_notes text, -- findings from the physical exam
    assessment text, -- doctor's assessment/diagnosis summary
    treatment_plan text, -- planned course of action
    vitals jsonb, -- store vitals like BP, HR, Temp as structured JSON
    created_at timestamp with time zone NOT NULL DEFAULT current_timestamp,
    PRIMARY KEY (record_id)
)
CREATE TABLE healthcare.diagnoses (
    diagnosis_id character varying(64) NOT NULL, -- unique identifier for the diagnosis entry
    record_id character varying(64) NOT NULL, -- FK linking to the specific medical record entry
    patient_id character varying(64) NOT NULL, -- FK to patients table
    doctor_id character varying(64) NOT NULL, -- FK to doctors table (diagnosing doctor)
    diagnosis_code character varying(20) NOT NULL, -- standard code (e.g., ICD-10)
    code_type character varying(10) NOT NULL DEFAULT 'ICD-10', -- type of code used
    description text, -- textual description of the diagnosis
    diagnosis_date date NOT NULL, -- date the diagnosis was made
    status character varying(32) NOT NULL, -- e.g., Active, Resolved, Ruled Out
    is_chronic boolean DEFAULT false, -- flag for chronic conditions
    PRIMARY KEY (diagnosis_id)
)
CREATE TABLE healthcare.medications (
    medication_id character varying(64) NOT NULL, -- unique identifier for the medication type
    medication_name character varying(255) NOT NULL, -- common or brand name
    generic_name character varying(255), -- generic chemical name
    manufacturer character varying(100), -- drug manufacturer
    ndc_code character varying(20) UNIQUE, -- National Drug Code (optional but useful)
    description text, -- description of the medication
    PRIMARY KEY (medication_id)
)
CREATE TABLE healthcare.prescriptions (
    prescription_id character varying(64) NOT NULL, -- unique identifier for the prescription
    record_id character varying(64) NOT NULL, -- FK linking to the medical record where it was prescribed
    patient_id character varying(64) NOT NULL, -- FK to patients table
    doctor_id character varying(64) NOT NULL, -- FK to prescribing doctor
    medication_id character varying(64) NOT NULL, -- FK to medications table
    dosage character varying(100) NOT NULL, -- e.g., '100mg', '1 tablet'
    frequency character varying(100) NOT NULL, -- e.g., 'Once daily', 'Twice a day with meals'
    route character varying(50), -- e.g., 'Oral', 'Topical', 'Intravenous'
    start_date date NOT NULL, -- date prescription begins
    end_date date, -- date prescription ends (if applicable)
    quantity_dispensed numeric(10,2), -- amount dispensed (e.g., number of tablets)
    refills_allowed integer NOT NULL DEFAULT 0, -- number of allowed refills
    prescription_date timestamp with time zone NOT NULL DEFAULT current_timestamp,
    PRIMARY KEY (prescription_id)
)
CREATE TABLE healthcare.insurance_plans (
    plan_id character varying(64) NOT NULL, -- unique identifier for the insurance plan
    plan_name character varying(200) NOT NULL, -- name of the insurance plan
    insurance_provider character varying(100) NOT NULL, -- name of the insurance company
    plan_type character varying(50), -- e.g., PPO, HMO, EPO
    contact_phone character varying(20), -- provider contact number
    website character varying(255), -- provider website
    PRIMARY KEY (plan_id)
)


[User] Show me all appointments scheduled to last exactly 60 minutes.

[Assistant]
SELECT appointment_id, patient_id, doctor_id, appointment_time, duration_minutes, status
FROM healthcare.appointments
WHERE duration_minutes = 60;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE healthcare.appointments (
    appointment_id character varying(64) NOT NULL, -- unique identifier for the appointment
    patient_id character varying(64) NOT NULL, -- FK to patients table
    doctor_id character varying(64) NOT NULL, -- FK to doctors table
    appointment_time timestamp with time zone NOT NULL, -- date and time of the appointment
    duration_minutes integer NOT NULL, -- expected duration in minutes
    reason text, -- reason for the visit
    status character varying(32) NOT NULL, -- e.g., Scheduled, Completed, Cancelled, No-show
    location_id character varying(64), -- FK to a potential locations/clinics table
    notes text, -- notes related to scheduling
    created_at timestamp with time zone NOT NULL DEFAULT current_timestamp,
    PRIMARY KEY (appointment_id)
)


[User] Show for every asset the usernames of users who have both bought and sold that asset, along with the asset name.

[Assistant]
SELECT DISTINCT a.asset_id, a.name AS asset_name, u.username
FROM trading_platform.assets a
JOIN trading_platform.trades t_buyer ON t_buyer.asset_id = a.asset_id
JOIN trading_platform.users u ON u.user_id = t_buyer.buyer_id
WHERE EXISTS (
    SELECT 1 FROM trading_platform.trades t_seller
    WHERE t_seller.asset_id = a.asset_id AND t_seller.seller_id = t_buyer.buyer_id
);

[User] Only include assets where at least 2 different users have both bought and sold them, and list the number of such users.

[Assistant]
SELECT a.asset_id, a.name AS asset_name, COUNT(DISTINCT u.user_id) AS user_count
FROM trading_platform.assets a
JOIN trading_platform.trades t_buyer ON t_buyer.asset_id = a.asset_id
JOIN trading_platform.users u ON u.user_id = t_buyer.buyer_id
WHERE EXISTS (
    SELECT 1 FROM trading_platform.trades t_seller
    WHERE t_seller.asset_id = a.asset_id AND t_seller.seller_id = t_buyer.buyer_id
)
GROUP BY a.asset_id, a.name
HAVING COUNT(DISTINCT u.user_id) >= 2;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE trading_platform.users (
    user_id character varying(64) NOT NULL,  -- unique identifier for the user
    username character varying(128) NOT NULL, -- username of the user
    email character varying(128) NOT NULL, -- email address of the user
    password_hash text NOT NULL, -- hashed password of the user
    created_at timestamp NOT NULL, -- time when the user account was created
    PRIMARY KEY (user_id)
)
CREATE TABLE trading_platform.trades (
    trade_id character varying(64) NOT NULL,  -- unique identifier for the trade
    order_id character varying(64) NOT NULL, -- identifier of the order that led to the trade
    buyer_id character varying(64) NOT NULL, -- identifier of the buyer
    seller_id character varying(64) NOT NULL, -- identifier of the seller
    asset_id character varying(64) NOT NULL, -- identifier of the asset being traded
    quantity numeric(38,14) NOT NULL, -- quantity of the asset in the trade
    price numeric(38,14) NOT NULL, -- price per unit of the asset
    traded_at timestamp NOT NULL, -- time when the trade was executed
    PRIMARY KEY (trade_id)
)
CREATE TABLE trading_platform.assets (
    asset_id character varying(64) NOT NULL,  -- unique identifier for the asset
    name character varying(128) NOT NULL, -- name of the asset
    symbol character varying(32) NOT NULL, -- symbol of the asset
    type character varying(32) NOT NULL, -- type of the asset (e.g., cryptocurrency, stock)
    PRIMARY KEY (asset_id)
)
CREATE TABLE trading_platform.dapps (
    dapp_id character varying(64) NOT NULL,  -- unique identifier for the DApp
    name character varying(128) NOT NULL, -- name of the DApp
    description text NOT NULL, -- description of the DApp
    url character varying(256) NOT NULL, -- URL of the DApp
    PRIMARY KEY (dapp_id)
)


[User] List all available rooms (status = 'available') with their room numbers and features, along with their property IDs.

[Assistant] SELECT room_id, property_id, room_number, features FROM hospitality_technology.rooms WHERE status = 'available'

[User] Now, filter these results to only include non-smoking rooms on floors 2 or higher.

[Assistant] SELECT room_id, property_id, room_number, features FROM hospitality_technology.rooms WHERE status = 'available' AND is_smoking = false AND floor >= 2

[User] The query should also show the current condition of each room.

[Assistant] SELECT room_id, property_id, room_number, features, current_condition FROM hospitality_technology.rooms WHERE status = 'available' AND is_smoking = false AND floor >= 2

[User] Actually, I need to see the results ordered by floor in ascending order and then by room number.

[Assistant] SELECT room_id, property_id, room_number, features, current_condition FROM hospitality_technology.rooms WHERE status = 'available' AND is_smoking = false AND floor >= 2 ORDER BY floor ASC, room_number ASC

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE hospitality_technology.rooms ( room_id text PRIMARY KEY, property_id text, room_number text, room_type_id text, floor int, status text, is_smoking boolean, features text, current_condition text, last_cleaned_at timestamp )
CREATE TABLE hospitality_technology.reservations (
    reservation_id character varying(64) NOT NULL,  -- unique identifier for the booking
    property_id character varying(64) NOT NULL, -- FK to properties table
    guest_id character varying(64) NOT NULL, -- FK to guests table (primary guest)
    room_id character varying(64), -- FK to rooms table (assigned room, might be null initially)
    room_type_id character varying(64) NOT NULL, -- FK to room_types table (booked room type)
    check_in_date date NOT NULL, -- scheduled check-in date
    check_out_date date NOT NULL, -- scheduled check-out date
    actual_check_in_ts timestamp with time zone, -- actual check-in time
    actual_check_out_ts timestamp with time zone, -- actual check-out time
    num_adults integer NOT NULL, -- number of adults
    num_children integer DEFAULT 0, -- number of children
    status character varying(50) NOT NULL, -- e.g., Pending, Confirmed, CheckedIn, CheckedOut, Cancelled, NoShow
    booking_source character varying(100), -- e.g., Website, OTA (Expedia, Booking.com), Phone, WalkIn
    rate_plan_id character varying(64), -- FK to rate_plans table (optional)
    total_amount numeric(12, 2), -- estimated or final total cost
    amount_paid numeric(12, 2) DEFAULT 0.00, -- amount already paid
    special_requests text, -- specific guest requests for this booking
    created_at timestamp with time zone NOT NULL DEFAULT current_timestamp,
    updated_at timestamp with time zone NOT NULL DEFAULT current_timestamp,
    PRIMARY KEY (reservation_id),
    FOREIGN KEY (property_id) REFERENCES hospitality_technology.properties(property_id),
    FOREIGN KEY (guest_id) REFERENCES hospitality_technology.guests(guest_id),
    FOREIGN KEY (room_id) REFERENCES hospitality_technology.rooms(room_id),
    FOREIGN KEY (room_type_id) REFERENCES hospitality_technology.room_types(room_type_id)
)
CREATE TABLE hospitality_technology.services ( service_id text, property_id text, service_name text, description text, category text, price numeric, unit text, is_available boolean, department text )
CREATE TABLE hospitality_technology.payments ( payment_id.text, reservation_id.text, guest_id.text, bill_id.text, amount.numeric, currency_code.text, payment_method.text, card_type.text, card_last_four.text, transaction_ref.text, payment_timestamp.timestamp, status.text, staff_id_processed.text, notes.text )
CREATE TABLE hospitality_technology.reviews ( review_id.text, property_id.text, reservation_id.text, guest_id.text, rating_overall.integer, rating_cleanliness.integer, rating_service.integer, rating_location.integer, rating_value.integer, comment.text, review_source.text, review_date.timestamp, is_public.boolean, staff_response.text, response_staff_id.text, response_date.timestamp )


[User] Show me the top 5 projects by valuation that completed fundraising rounds in the last 3 months, along with their narrative information if available.

[Assistant] SELECT pfr.project_name, pfr.valuation, pfr.rounds_name, pfr.investment_date, ni.narrative, ni.trend_rank FROM project_fundraising_record pfr LEFT JOIN token_basic_info tbi ON pfr.project_name = tbi.token_name LEFT JOIN narrative_info ni ON tbi.narrative = ni.narrative WHERE pfr.investment_date >= DATE_SUB(CURRENT_DATE, INTERVAL 3 MONTH) ORDER BY pfr.valuation DESC LIMIT 5;

[User] Can you also include the 24-hour trading volume for these projects' narratives and filter to only include projects with valuation over $50 million?

[Assistant] SELECT pfr.project_name, pfr.valuation, pfr.rounds_name, pfr.investment_date, ni.narrative, ni.trend_rank, ni.volume_24h FROM project_fundraising_record pfr LEFT JOIN token_basic_info tbi ON pfr.project_name = tbi.token_name LEFT JOIN narrative_info ni ON tbi.narrative = ni.narrative WHERE pfr.investment_date >= DATE_SUB(CURRENT_DATE, INTERVAL 3 MONTH) AND pfr.valuation > 50000000 ORDER BY pfr.valuation DESC LIMIT 5;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE project_fundraising_record ( id character varying(32) NOT NULL,  -- fundraising record id project_id character varying(32) NOT NULL, -- the invested project's id project_name character varying(128) NOT NULL, -- name of the invested project rounds_name character varying(32), -- name of the fundraising round investment_value numeric(38,14), -- amount of the fundraising in USD investment_date character varying(128), -- the date of the investment happened introduction character varying(128), -- the introduction of the invested project valuation numeric(38,14), -- the valuation of the project in USD when invested )
CREATE TABLE token_basic_info ( coin_id character varying(100) NOT NULL, token_name character varying(100) NOT NULL, token_symbol character varying(100) NOT NULL, token_address character varying(100) NOT NULL, chain text, price double precision, price_change_percentage_1h double precision, price_change_percentage_24h double precision, price_change_percentage_7d double precision, highest_price_24h double precision, lowest_price_24h double precision, market_cap double precision, market_cap_rank bigint, market_cap_change_percentage_24h text, total_volume text, narrative text, trend_rank bigint )
 "CREATE TABLE narrative_info (",
    "narrative character varying(512) NOT NULL, -- the id of narrative",
    "top_3_coins text, -- the top 3 tokens in the narrative",
    "price_change_percentage_1h double precision, -- change in value divided by the absolute price value of the original token price in 1 hour in the narrative",
    "price_change_percentage_24h double precision, -- change in value divided by the absolute price value of the original token price in 24 hours in the narrative",
    "price_change_percentage_7d double precision, -- change in value divided by the absolute price value of the original token price in 7 days in the narrative",
    "market_cap double precision, -- the market cap of the narrative",
    "volume_24h double precision, -- the trade volume of the narrative",
    "trend_rank bigint, -- the trending rank of the narrative, value 1 expresses the most popular narrative",
    "token_num bigint, -- total token number in the narrative",
    ",PRIMARY KEY (narrative));"

CREATE TABLE cex_token_balance ( snapshot_time character varying(32) NOT NULL, chain character varying(128) NOT NULL, address character varying(128) NOT NULL, exchange character varying(512) NOT NULL, token_address character varying(128) NOT NULL, token_symbol character varying(512), balance numeric(38,10), usd_value numeric(38,14), price double precision )
CREATE TABLE smart_money_profit ( address character varying(100) NOT NULL, rank INT, profit numeric(38,6), roi numeric(38,2), realized_ratio numeric(38,2), most_profit_token character varying(100), last_trade_time character varying(100), chain character varying(100) )
CREATE TABLE smart_money_token_performance ( token_address character varying(100) NOT NULL, token_symbol character varying(100), pnl numeric(38,2), net_flow numeric(38,2), avg_cost numeric(38,16), price double precision, realized_ratio numeric(10,2), roi numeric(10,2), chain character varying(100) )


[User] Find all pairs of different insurance records that share the same group_number, and show group_number, the patient_insurance_id of both records, and their corresponding patient_ids.

[Assistant]
SELECT a.group_number,
       a.patient_insurance_id AS pi_id1,
       a.patient_id            AS patient1_id,
       b.patient_insurance_id AS pi_id2,
       b.patient_id            AS patient2_id
FROM healthcare.patient_insurance a
JOIN healthcare.patient_insurance b
  ON a.group_number = b.group_number
 AND a.patient_insurance_id < b.patient_insurance_id
WHERE a.group_number IS NOT NULL;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE healthcare.patient_insurance ( patient_insurance_id text, patient_id text, plan_id text, policy_number text, group_number text, subscriber_name text, effective_date date, expiration_date date, is_primary boolean )


[User] Show me the top 5 users who have interacted with DApps, along with the count of distinct DApps they interacted with and their wallet addresses.

[Assistant] SELECT w.user_id, COUNT(DISTINCT d.dapp_id) AS dapp_count, w.address FROM trading_platform.wallets w JOIN trading_platform.dapps d ON 1=1 GROUP BY w.user_id, w.address ORDER BY dapp_count DESC LIMIT 5;

[User] This query doesn't properly show DApp interactions. Please modify it to correctly join with a table that records user-DApp interactions.

[Assistant] I notice there's no interaction table in the provided schema. Without a table recording user-DApp interactions, I cannot generate this query accurately. Would you like to see users who have wallets and DApps separately instead?

[User] You're right. Instead, show me users who have wallets but have never interacted with any DApps, along with their wallet addresses.

[Assistant] SELECT w.user_id, w.address FROM trading_platform.wallets w WHERE NOT EXISTS (SELECT 1 FROM trading_platform.dapps d WHERE 1=1) GROUP BY w.user_id, w.address;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE trading_platform.wallets ( wallet_id.text, user_id.text, address.text, private_key.text, created_at.timestamp )
CREATE TABLE trading_platform.trades ( trade_id character varying(64) NOT NULL, order_id character varying(64) NOT NULL, buyer_id character varying(64) NOT NULL, seller_id character varying(64) NOT NULL, asset_id character varying(64) NOT NULL, quantity numeric(38,14) NOT NULL, price numeric(38,14) NOT NULL, traded_at timestamp NOT NULL, PRIMARY KEY (trade_id) )
CREATE TABLE trading_platform.assets ( asset_id.text, name.text, symbol.text, type.text )
CREATE TABLE trading_platform.dapps (
    dapp_id character varying(64) NOT NULL,  -- unique identifier for the DApp
    name character varying(128) NOT NULL, -- name of the DApp
    description text NOT NULL, -- description of the DApp
    url character varying(256) NOT NULL, -- URL of the DApp
    PRIMARY KEY (dapp_id)
)
CREATE TABLE trading_platform.metadata ( metadata_id character varying(64) NOT NULL, asset_id character varying(64) NOT NULL, key character varying(128) NOT NULL, value text NOT NULL, PRIMARY KEY (metadata_id) )


[User] Show all medical records with the record_id, record_date, the patient's insurance policy_number, and the doctor's ID, for records linked to a currently active insurance policy.

[Assistant]
SELECT mr.record_id, mr.record_date, pi.policy_number, mr.doctor_id
FROM healthcare.medical_records mr
INNER JOIN healthcare.patient_insurance pi ON mr.patient_id = pi.patient_id
WHERE pi.expiration_date IS NULL OR pi.expiration_date >= CURRENT_DATE;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE healthcare.appointments ( appointment_id.text, patient_id.text, doctor_id.text, appointment_time.timestamp, duration_minutes.integer, reason.text, status.text, location_id.text, notes.text, created_at.timestamp )
CREATE TABLE healthcare.medical_records ( record_id.text, patient_id.text, appointment_id.text, doctor_id.text, record_date.timestamp, chief_complaint.text, present_illness_history.text, past_medical_history.text, physical_examination_notes.text, assessment.text, treatment_plan.text, vitals.json, created_at.timestamp )
CREATE TABLE healthcare.patient_insurance ( patient_insurance_id text, patient_id text, plan_id text, policy_number text, group_number text, subscriber_name text, effective_date date, expiration_date date, is_primary boolean )


[User] Return the count of comments for each hashtag.

[Assistant]
SELECT ph.hashtag_id,
       h.tag_name,
       COUNT(c.comment_id) AS comment_count
FROM social_media.post_hashtags ph
JOIN social_media.hashtags h
  ON ph.hashtag_id = h.hashtag_id
JOIN social_media.comments c
  ON ph.post_id = c.post_id
GROUP BY ph.hashtag_id, h.tag_name;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE social_media.users ( user_id text PRIMARY KEY, username text, email text, password_hash text, full_name text, profile_picture_url text, bio text, location text, created_at timestamp, updated_at timestamp, is_verified bool )
CREATE TABLE social_media.posts ( post_id text PRIMARY KEY, user_id text, content text, media_url text, media_type text, created_at timestamp, updated_at timestamp, visibility text, location_lat numeric, location_lon numeric )
CREATE TABLE social_media.comments ( comment_id text PRIMARY KEY, post_id text, user_id text, parent_comment_id text, content text, created_at timestamp, updated_at timestamp )
CREATE TABLE social_media.likes ( like_id text PRIMARY KEY, user_id text, post_id text, comment_id text, created_at timestamp )
CREATE TABLE social_media.hashtags ( hashtag_id text PRIMARY KEY, tag_name text, created_at timestamp )
CREATE TABLE social_media.post_hashtags ( post_hashtag_id text PRIMARY KEY, post_id text, hashtag_id text )
CREATE TABLE social_media.messages ( message_id text PRIMARY KEY, conversation_id text, sender_user_id text, content text, media_url text, media_type text, sent_at timestamp, read_at timestamp )
CREATE TABLE social_media.conversations ( conversation_id text PRIMARY KEY, created_at timestamp, last_message_at timestamp, is_group_chat bool, group_name text )
CREATE TABLE social_media.conversation_participants ( participant_id text PRIMARY KEY, conversation_id text, user_id text, joined_at timestamp, last_read_at timestamp )
CREATE TABLE social_media.notifications ( notification_id text PRIMARY KEY, recipient_user_id text, sender_user_id text, notification_type text, target_entity_id text, target_entity_type text, created_at timestamp, read_at timestamp )
CREATE TABLE social_media.user_settings ( setting_id text PRIMARY KEY, user_id text, theme text, email_notifications_enabled bool, push_notifications_enabled bool, private_profile bool, updated_at timestamp )


[User] List all wallets that were created during the hour of the day which saw the highest number of wallet creations. Show the wallet ID, user ID, address, and creation timestamp.

[Assistant]
WITH HourlyCounts AS (
    SELECT EXTRACT(HOUR FROM created_at) AS hour, COUNT(*) AS wallet_count
    FROM web3.wallets
    GROUP BY 1
),
MaxHour AS (
    SELECT hour
    FROM HourlyCounts
    ORDER BY wallet_count DESC
    LIMIT 1
)
SELECT wallet_id, user_id, address, created_at
FROM web3.wallets
WHERE EXTRACT(HOUR FROM created_at) = (SELECT hour FROM MaxHour);

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE web3.wallets ( wallet_id text PRIMARY KEY, user_id text, address text, private_key text, created_at timestamp )


[User] Can you help me get the total number of operational platforms across all stations?

[Assistant] db.platforms.countDocuments({ status: 'Operational' });

System:
You are an expert in writing database language. You can write a corresponding database language query to answer the user's question based on the table structure described by the table creation statement.
##Table Structure
// db.createCollection('platforms')
// Optional: db.platforms.createIndex({ platform_id: 1 }, { unique: true })
// Optional: db.platforms.createIndex({ station_id: 1 })
{
  _id: ObjectId(),
  platform_id: "plat_123", // String (unique)
  station_id: "station_xyz", // String (references stations.station_id)
  platform_number: "1A", // String
  track_number: "T1", // String
  status: "Operational", // String ('Operational', 'Maintenance', 'Closed')
  length_meters: 250.50, // Decimal128 or Double
  accessible: true // Boolean
}
// db.createCollection('routes')
// Optional: db.routes.createIndex({ route_id: 1 }, { unique: true })
{
  _id: ObjectId(),
  route_id: "route_ne_corr", // String (unique)
  route_name: "Northeast Corridor", // String
  description: "High-speed rail linking Boston and Washington D.C.", // String
  origin_station_id: "station_bos", // String (references stations.station_id)
  destination_station_id: "station_was", // String (references stations.station_id)
  is_active: true // Boolean
}
// db.createCollection('route_stations')
// Optional: db.route_stations.createIndex({ route_station_id: 1 }, { unique: true })
// Optional: db.route_stations.createIndex({ route_id: 1, sequence_order: 1 }, { unique: true })
{
  _id: ObjectId(),
  route_station_id: "rs_ne_1", // String (unique)
  route_id: "route_ne_corr", // String (references routes.route_id)
  station_id: "station_bos", // String (references stations.station_id)
  sequence_order: 1, // Int32
  distance_from_previous_km: null, // Decimal128 or Double (null for first stop)
  typical_stop_duration_minutes: null // Int32 (null for origin/destination or if no stop)
}
// --- OR --- Embed within the Route document:
// {
//   _id: ObjectId(), route_id: "route_ne_corr", ...,
//   stations: [
//     { station_id: "station_bos", sequence_order: 1, distance_from_previous_km: null, typical_stop_duration_minutes: null },
//     { station_id: "station_pvd", sequence_order: 2, distance_from_previous_km: 70.5, typical_stop_duration_minutes: 5 },
//     ...
//   ]
// }
// db.createCollection('schedules')
// Optional: db.schedules.createIndex({ schedule_id: 1 }, { unique: true })
// Optional: db.schedules.createIndex({ route_id: 1, departure_datetime: 1 })
{
  _id: ObjectId(),
  schedule_id: "sched_1122", // String (unique)
  train_id: "train_789", // String (references trains.train_id)
  route_id: "route_ne_corr", // String (references routes.route_id)
  departure_datetime: ISODate("2024-05-10T08:00:00-04:00"), // Date (with timezone)
  arrival_datetime: ISODate("2024-05-10T15:30:00-04:00"), // Date (with timezone)
  status: "Scheduled", // String ('Scheduled', 'On Time', 'Delayed', 'Cancelled', 'Arrived')
  notes: "Track work expected near Philadelphia" // String
}
// db.createCollection('schedule_stops')
// Optional: db.schedule_stops.createIndex({ stop_id: 1 }, { unique: true })
// Optional: db.schedule_stops.createIndex({ schedule_id: 1, sequence_order: 1 }, { unique: true })
{
  _id: ObjectId(),
  stop_id: "stop_sched1122_1", // String (unique)
  schedule_id: "sched_1122", // String (references schedules.schedule_id)
  station_id: "station_bos", // String (references stations.station_id)
  platform_id: "plat_bos_3", // String (references platforms.platform_id, nullable)
  sequence_order: 1, // Int32
  scheduled_arrival_time: null, // Date
  scheduled_departure_time: ISODate("2024-05-10T08:00:00-04:00"), // Date
  actual_arrival_time: null, // Date
  actual_departure_time: ISODate("2024-05-10T08:01:00-04:00"), // Date
  status: "On Time" // String
}
// --- OR --- Embed within the Schedule document using an array 'stops'
// db.createCollection('passengers')
// Optional: db.passengers.createIndex({ passenger_id: 1 }, { unique: true })
// Optional: db.passengers.createIndex({ email: 1 }, { unique: true, sparse: true })
// Optional: db.passengers.createIndex({ phone_number: 1 }, { unique: true, sparse: true })
{
  _id: ObjectId(),
  passenger_id: "pass_pqr", // String (unique)
  first_name: "Alice", // String
  last_name: "Smith", // String
  email: "alice.smith@example.com", // String (unique, sparse)
  phone_number: "+15551234567", // String (unique, sparse)
  date_of_birth: ISODate("1990-03-20"), // Date
  loyalty_program_id: "LOYALTY123", // String
  created_at: ISODate("2023-02-01T11:00:00Z") // Date
}
// db.createCollection('staff')
// Optional: db.staff.createIndex({ staff_id: 1 }, { unique: true })
// Optional: db.staff.createIndex({ employee_number: 1 }, { unique: true })
// Optional: db.staff.createIndex({ contact_email: 1 }, { unique: true, sparse: true })
{
  _id: ObjectId(),
  staff_id: "staff_mno", // String (unique)
  first_name: "Bob", // String
  last_name: "Jones", // String
  role: "Conductor", // String
  primary_station_id: null, // String (references stations.station_id, nullable)
  employee_number: "E12345", // String (unique)
  hire_date: ISODate("2018-06-01"), // Date
  contact_email: "bob.jones@example-rail.com", // String (unique, sparse)
  contact_phone: "+15559876543", // String
  is_active: true // Boolean
}


[User] Show a list of all game developers with their name and founded year.

[Assistant]
SELECT
  name,
  founded_year
FROM gaming_technology.developers;

[User] Please filter the list to only include developers founded in the year 1998.

[Assistant]
SELECT
  name,
  founded_year
FROM gaming_technology.developers
WHERE
  founded_year = 1998;

[User] Can you also include the number of games each of these developers has released?

[Assistant]
SELECT
  T1.name,
  T1.founded_year,
  COUNT(T2.game_id) AS game_count
FROM gaming_technology.developers AS T1
LEFT JOIN gaming_technology.games AS T2
  ON T1.developer_id = T2.developer_id
WHERE
  T1.founded_year = 1998
GROUP BY
  T1.developer_id,
  T1.name,
  T1.founded_year;

[User] Now, only show the developers who have released exactly 2 games.

[Assistant]
SELECT
  T1.name,
  T1.founded_year,
  COUNT(T2.game_id) AS game_count
FROM gaming_technology.developers AS T1
JOIN gaming_technology.games AS T2
  ON T1.developer_id = T2.developer_id
WHERE
  T1.founded_year = 1998
GROUP BY
  T1.developer_id,
  T1.name,
  T1.founded_year
HAVING
  COUNT(T2.game_id) = 2;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE gaming_technology.players (
    player_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for the player
    username character varying(100) NOT NULL UNIQUE, -- player's chosen display name
    email character varying(255) NOT NULL UNIQUE, -- player's email address for login/recovery
    password_hash text NOT NULL, -- securely hashed password
    registration_date timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP, -- when the player account was created
    last_login timestamp with time zone, -- timestamp of the last successful login
    country_code character(2), -- player's country (ISO 3166-1 alpha-2)
    status character varying(20) NOT NULL DEFAULT 'active', -- account status (e.g., active, banned, suspended)
    profile_data jsonb, -- flexible field for avatar url, bio, preferences etc.
    PRIMARY KEY (player_id)
)
CREATE TABLE gaming_technology.games (
    game_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for the game
    title character varying(200) NOT NULL, -- official title of the game
    developer_id uuid NOT NULL, -- FK linking to the developers table
    publisher_id uuid, -- FK linking to a potential publishers table (optional)
    genre character varying(100), -- primary genre (e.g., RPG, FPS, Strategy)
    release_date date, -- official release date
    description text, -- short description or synopsis of the game
    platform character varying(50) NOT NULL, -- primary platform (e.g., PC, PlayStation 5, Xbox Series X, Mobile)
    engine character varying(100), -- game engine used (e.g., Unreal Engine 5, Unity)
    website character varying(255), -- official website URL
    PRIMARY KEY (game_id)
    -- FOREIGN KEY (developer_id) REFERENCES gaming_technology.developers(developer_id) -- Example FK constraint
)
CREATE TABLE gaming_technology.developers (
    developer_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for the developer studio
    name character varying(150) NOT NULL UNIQUE, -- name of the development studio
    country character varying(100), -- country where the studio is based
    founded_year integer, -- year the studio was founded
    website character varying(255), -- developer's official website
    created_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (developer_id)
)
CREATE TABLE gaming_technology.game_sessions (
    session_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for the game session
    player_id uuid NOT NULL, -- FK linking to the players table
    game_id uuid NOT NULL, -- FK linking to the games table
    server_id uuid, -- FK linking to the servers table (nullable for single-player)
    start_time timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP, -- when the session began
    end_time timestamp with time zone, -- when the session ended (null if ongoing)
    duration_seconds integer, -- calculated duration of the session in seconds
    score integer, -- player's score for the session, if applicable
    session_data jsonb, -- flexible field for session-specific info (e.g., map played, character used)
    PRIMARY KEY (session_id)
    -- FOREIGN KEY (player_id) REFERENCES gaming_technology.players(player_id),
    -- FOREIGN KEY (game_id) REFERENCES gaming_technology.games(game_id),
    -- FOREIGN KEY (server_id) REFERENCES gaming_technology.servers(server_id)
)
CREATE TABLE gaming_technology.servers (
    server_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for the game server instance
    game_id uuid NOT NULL, -- FK linking to the game this server hosts
    server_name character varying(150), -- display name for the server
    region character varying(50) NOT NULL, -- geographical region (e.g., us-east-1, eu-west-2)
    ip_address character varying(45), -- IP address (IPv4 or IPv6)
    port integer, -- network port number
    current_players integer NOT NULL DEFAULT 0, -- number of players currently connected
    max_players integer NOT NULL, -- maximum player capacity
    status character varying(30) NOT NULL DEFAULT 'offline', -- server status (e.g., online, offline, maintenance)
    last_heartbeat timestamp with time zone, -- last time the server reported its status
    PRIMARY KEY (server_id)
    -- FOREIGN KEY (game_id) REFERENCES gaming_technology.games(game_id)
)
CREATE TABLE gaming_technology.achievements (
    achievement_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for an achievement definition
    game_id uuid NOT NULL, -- FK linking to the game the achievement belongs to
    name character varying(150) NOT NULL, -- name of the achievement
    description text NOT NULL, -- how to unlock the achievement
    icon_url character varying(255), -- URL for the achievement's icon
    points integer DEFAULT 0, -- points awarded for unlocking (optional)
    hidden boolean DEFAULT false, -- whether the achievement details are hidden until unlocked
    PRIMARY KEY (achievement_id)
    -- FOREIGN KEY (game_id) REFERENCES gaming_technology.games(game_id)
)
CREATE TABLE gaming_technology.player_achievements (
    player_achievement_id uuid NOT NULL DEFAULT gen_random_uuid(), -- unique identifier for this unlock instance
    player_id uuid NOT NULL, -- FK linking to the player who unlocked it
    achievement_id uuid NOT NULL, -- FK linking to the achievement definition
    unlocked_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP, -- when the achievement was unlocked
    PRIMARY KEY (player_achievement_id),
    UNIQUE (player_id, achievement_id) -- Ensure a player can only unlock an achievement once
    -- FOREIGN KEY (player_id) REFERENCES gaming_technology.players(player_id),
    -- FOREIGN KEY (achievement_id) REFERENCES gaming_technology.achievements(achievement_id)
)


[User] List all available services in the 'Housekeeping' department that cost less than 20.

[Assistant]
SELECT service_id, service_name, price
FROM hospitality_technology.services
WHERE department = 'Housekeeping' AND is_available = true AND price < 20;

[User] Sort the results by service_name in ascending order.

[Assistant]
SELECT service_id, service_name, price
FROM hospitality_technology.services
WHERE department = 'Housekeeping' AND is_available = true AND price < 20
ORDER BY service_name ASC;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE hospitality_technology.rooms ( room_id text, property_id text, room_number text, room_type_id text, floor integer, status text, is_smoking boolean, features text, current_condition text, last_cleaned_at timestamp )
CREATE TABLE hospitality_technology.room_types ( room_type_id text, property_id text, type_name text, description text, base_rate numeric, max_occupancy integer, bed_type text, area_sqft numeric, amenities text )
CREATE TABLE hospitality_technology.guests ( guest_id text, first_name text, last_name text, email text, phone_number text, date_of_birth date, address_line1 text, city text, state_province text, postal_code text, country_code text, preferences text, loyalty_member_id text, communication_consent boolean, created_at timestamp, updated_at timestamp )
CREATE TABLE hospitality_technology.services ( service_id text, property_id text, service_name text, description text, category text, price numeric, unit text, is_available boolean, department text )


[User] List all DApps that have 'wallet' in their description, along with their URLs.

[Assistant] SELECT name, url FROM trading_platform.dapps WHERE description LIKE '%wallet%';

[User] Now show only DApps created in the last year, and include their creation date.

[Assistant] SELECT name, url, created_at FROM trading_platform.dapps WHERE description LIKE '%wallet%' AND created_at >= NOW() - INTERVAL '1 year';

[User] Actually, I want to see the count of such DApps grouped by month of creation.

[Assistant] SELECT DATE_TRUNC('month', created_at) AS month, COUNT(*) AS dapp_count FROM trading_platform.dapps WHERE description LIKE '%wallet%' AND created_at >= NOW() - INTERVAL '1 year' GROUP BY month ORDER BY month;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE trading_platform.users ( user_id.text, username.text, email.text, password_hash.text, created_at.timestamp )
CREATE TABLE trading_platform.dapps ( dapp_id.text, name.text, description.text, url.text )


[User] Show me all insurance plans where the website includes 'secure'.

[Assistant] SELECT * FROM healthcare.insurance_plans WHERE website ILIKE '%secure%';

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE healthcare.doctors ( doctor_id text, first_name text, last_name text, specialty text, license_number text, phone_number text, email text, hospital_affiliation_id text, created_at timestamp, updated_at timestamp )
CREATE TABLE healthcare.medical_records ( record_id text PRIMARY KEY, patient_id text, appointment_id text, doctor_id text, record_date timestamp, chief_complaint text, present_illness_history text, past_medical_history text, physical_examination_notes text, assessment text, treatment_plan text, vitals text, created_at timestamp )
CREATE TABLE healthcare.insurance_plans ( plan_id.text, plan_name.text, insurance_provider.text, plan_type.text, contact_phone.text, website.text )
CREATE TABLE healthcare.patient_insurance ( patient_insurance_id text, patient_id text, plan_id text, policy_number text, group_number text, subscriber_name text, effective_date date, expiration_date date, is_primary boolean )


[User] List all ERC20 tokens where the price is between $1 and $10, including their names, symbols, and contract addresses.

[Assistant] SELECT tm.name, tm.symbol, tm.contract_address FROM token_metas tm JOIN token_prices_latest tpl ON tm.contract_address = tpl.contract_address WHERE tm.is_erc20 = 1 AND tpl.price BETWEEN 1 AND 10;

[User] I think there's an error in your query - the token_prices_latest table isn't in the schema. Can you modify it to use the token_balances table instead?

[Assistant] SELECT tm.name, tm.symbol, tm.contract_address FROM token_metas tm JOIN token_balances tb ON tm.contract_address = tb.wallet_address WHERE tm.is_erc20 = 1 AND CAST(tb.amount AS decimal) BETWEEN 1 AND 10;

[User] That doesn't seem right either. Let's just get the basic ERC20 token information without price filtering for now.

[Assistant] SELECT name, symbol, contract_address FROM token_metas WHERE is_erc20 = 1 LIMIT 100;

System:
You are an SQL statement expert. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE token_metas ( block_timestamp.timestamp, block_number.bigint, transaction_hash.text, transaction_index.bigint, from_address.text, contract_address.text, symbol.text, total_supply.text, name.text, decimals.bigint, is_erc20.integer, is_erc721.integer, is_erc1155.integer, is_proxy.integer, extra_info.text, pk.integer )
CREATE TABLE erc1155_approval_for_all ( block_number bigint NOT NULL, block_timestamp timestamp(3) NOT NULL, transaction_index integer NOT NULL, transaction_hash varchar(66) NOT NULL, log_index integer NOT NULL, contract_address varchar(42) NOT NULL )
CREATE TABLE erc20_balances ( block_number bigint NOT NULL, contract_address varchar NOT NULL, wallet_address varchar NOT NULL, amount varchar NOT NULL, pk varchar NOT NULL )
CREATE TABLE erc20_balances_historical ( block_number bigint, contract_address text, wallet_address text, amount text, pk integer )
CREATE TABLE nft_holders ( block_number bigint, contract_address text, wallet_address text, token_id text, contract_type text, amount text, pk text )
CREATE TABLE nft_holder_historical ( block_number.bigint, contract_address.text, wallet_address.text, token_id.text, contract_type.text, amount.text, pk.integer )
CREATE TABLE sui_nfts ( object_id text, status text, collection_type text, package_id text, previous_transaction text, display text, owner text, name text )
CREATE TABLE nft_collections ( blockchain text, contract_address text, name text, symbol text, deploy_block_number bigint, deploy_block_time bigint, erc_type text, owner text, traits text, description text, slug text, media_info text, image_url text, banner_image_url text, updated_at bigint, banner text, token_count bigint, floor_price text, floor_price_symbol text, floor_price_contract text, pk integer )
CREATE TABLE erc20_approval ( block_number bigint NOT NULL, block_timestamp timestamp(6) NOT NULL, transaction_index integer NOT NULL, transaction_hash varchar NOT NULL, log_index integer NOT NULL, contract_address varchar NOT NULL, pk integer NOT NULL )
CREATE TABLE token_balances ( block_number bigint, block_timestamp timestamp, tick text, wallet_address text, total_supply decimal, amount decimal )
CREATE TABLE token_info (
    block_timestamp timestamp(3) NOT NULL, -- Timestamp of the block containing the inscription (matches block_timestamp in transactions table)
    block_number bigint NOT NULL, -- Block number containing the inscription (matches block_number in transactions table)
    tx_index integer NOT NULL, -- Index of the transaction containing the inscription (matches transaction_index in transactions table)
    tx_hash varchar(66) NOT NULL, -- Unique identifier of the transaction containing the inscription (matches hash in transactions table)
    tick varchar NOT NULL, -- Token tick
    max_supply decimal(38,0) NOT NULL, -- Max supply
    lim decimal(38,0) NOT NULL, -- Limit of each mint
    wlim decimal(38,0) NOT NULL, -- Limit of each address can maximum mint
    dec integer NOT NULL, -- Decimal for minimum divie
    creator varchar(42) NOT NULL  -- Address originating the inscription (matches from_address in transactions table)
)
CREATE TABLE token_activities ( block_timestamp timestamp, block_number bigint, tx_index integer, tx_hash varchar, log_index integer, type varchar, tick varchar, id varchar, amt decimal, from_address varchar, to_address varchar )
CREATE TABLE mud_holesky_redstone ( address varchar NOT NULL, table_id varchar NOT NULL, key_bytes varchar NOT NULL, key0 varchar NOT NULL, key1 varchar NOT NULL, static_data varchar NOT NULL, encoded_lengths varchar NOT NULL, dynamic_data varchar NOT NULL, is_deleted boolean NOT NULL, block_number bigint NOT NULL, log_index bigint NOT NULL )
CREATE TABLE token_balances_bitcoin ( block_number bigint, block_timestamp timestamp, tick varchar, wallet_address varchar, total_supply varchar, amount varchar )
CREATE TABLE token_info_bitcoin ( block_timestamp timestamp, block_number bigint, tx_index integer, tx_hash varchar, tick varchar, max_supply decimal, lim decimal, wlim decimal, dec integer, creator varchar )
CREATE TABLE token_activities_avalanche ( block_timestamp.timestamp, block_number.bigint, tx_index.integer, tx_hash.text, log_index.integer, type.text, tick.text, id.text, amt.decimal, from_address.text, to_address.text )
CREATE TABLE token_balances_avalanche (
    block_number bigint NOT NULL, -- Block number containing the transaction
    block_timestamp timestamp(3) NOT NULL, -- Block timestamp containing the transaction
    tick varchar(20) NOT NULL, -- Ticker: Identifier of the inscription
    wallet_address varchar(42) NOT NULL, -- Address of owner
    total_supply decimal(38,0) NOT NULL, -- Max supply: Set max supply of the inscription
    amount decimal(38,0) NOT NULL  -- The balance of wallet balance at the corresponding block height
)
CREATE TABLE token_info_avalanche ( block_timestamp timestamp, block_number bigint, tx_index integer, tx_hash varchar, tick varchar, max_supply decimal, lim decimal, wlim decimal, dec integer, creator varchar, minted decimal, holders decimal, txs decimal, updated_timestamp timestamp, completed_timestamp timestamp, id varchar )


[User] What is the fuel efficiency of the train car with car_id 'TC456'?

[Assistant] I'm sorry, but I don't have access to information about the fuel efficiency of specific train cars. The data available in the train_cars table only includes details such as car_id, train_id, car_number, car_type, class, capacity, and features. If you have another question or need assistance with something else, I'm happy to help.

System:
You are an SQL statement expert and you can refuse the user's question if the question is not related to the table structure. Given the table structure described by the CREATE TABLE statement, write an SQL query that provides the solution to the user's question.
##Table Structure
CREATE TABLE train_station_management.train_cars ( car_id.text, train_id.text, car_number.text, car_type.text, class.text, capacity.integer, features.text )