natural_query	sql_query	result
List all players with their name and date of birth.	SELECT name, dob FROM players;	
What is the height of player 'Roger Federer'?	SELECT height FROM players WHERE name = 'Roger Federer';	
Get the names and countries of all players taller than 190 cm.	SELECT name, ioc FROM players WHERE height > 190;	
Find the average height of all players from USA.	SELECT AVG(height) FROM players WHERE ioc = 'USA';	
List matches where winner_age is less than 21.	SELECT tourney_name, winner_name FROM matches WHERE winner_age < 21;	
What was the final score in the match where 'Rafael Nadal' was the winner?	SELECT score FROM matches WHERE winner_name = 'Rafael Nadal';	
Which matches lasted more than 180 minutes?	SELECT tourney_id, tourney_name, minutes FROM matches WHERE minutes > 180;	
List all players whose height is between 180 and 200 cm.	SELECT name FROM players WHERE height BETWEEN 180 AND 200;	
Find the winner and loser names for matches held in 'Paris'.	SELECT winner_name, loser_name FROM matches WHERE tourney_name = 'Paris';	
Show players whose birth date is after 20000101.	SELECT name, dob FROM players WHERE dob > 20000101;	
Who was the youngest match winner in 'Roland Garros'?	SELECT winner_name FROM matches WHERE tourney_name = 'Roland Garros' ORDER BY winner_age ASC LIMIT 1;	
Display matches where the score included a tiebreak.	SELECT * FROM matches WHERE score LIKE '%7-6%';	
Get matches with the 'best_of' field equal to 5.	SELECT * FROM matches WHERE best_of = '5';	
Count matches won by left-handed players.	SELECT COUNT(*) FROM matches WHERE winner_hand = 'L;	
Show all match results where 'Maria Sharapova' was the loser.	SELECT * FROM matches WHERE loser_name = 'Andre Agassi';	
List tournaments and winners for matches longer than 200 minutes.	SELECT tourney_name, winner_name FROM matches WHERE minutes > 200;	
Show ranking history for player 'Stan Wawrinka'.	SELECT ranking_date, rank, Points FROM rankings JOIN players ON player = player_id WHERE name = 'Stan Wawrinka';	
List all doubles match winners in 'Wimbledon'.	SELECT winner1_name, winner2_name FROM matches WHERE tourney_name = 'Wimbledon';	
Show matches where winner's age is more than 34.	SELECT tourney_id, winner_name FROM matches WHERE winner_age > 34;	
How many matches did 'Pete Sampras' win in 1990?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Pete Sampras' AND tourney_date BETWEEN 19900101 AND 19901231;	
Which matches were completed in under one hour?	SELECT tourney_id FROM matches WHERE minutes < 60;	
What are the details of the doubles winners for tournament 'Indian Wells'?	SELECT winner1_name, winner2_name, winner1_ioc, winner2_ioc FROM matches WHERE tourney_name = 'Indian Wells';	
What are the player names and countries for players over 210 cm tall?	SELECT name, ioc FROM players WHERE height > 210;	
List matches where either the winner or loser is from 'JPN'.	SELECT tourney_name, winner_name, loser_name FROM matches WHERE winner_ioc = 'JPN' OR loser_ioc = 'JPN';	
Give all tournaments and dates where Rafael Nadal defeated Novak Djokovic.	SELECT tourney_name, tourney_date FROM matches WHERE winner_name='Rafael Nadal' AND loser_name='Novak Djokovic';	
Which players lost all their matches in 2021?	SELECT name FROM players WHERE player_id IN (SELECT loser_id FROM matches WHERE tourney_date BETWEEN 20210101 AND 20211231) AND player_id NOT IN (SELECT winner_id FROM matches WHERE tourney_date BETWEEN 20210101 AND 20211231);	
How many tournaments were held in 2022?	SELECT COUNT(DISTINCT tourney_name) FROM matches WHERE tourney_date BETWEEN 20220101 AND 20221231;	
Find the 5 players with the highest average match duration as winners.	SELECT winner_name, AVG(minutes) as avg_time FROM matches GROUP BY winner_name ORDER BY avg_time DESC LIMIT 5;	
Show matches where both winner and loser share the same first letter of their name.	SELECT tourney_name, winner_name, loser_name FROM matches WHERE SUBSTR(winner_name,1,1)=SUBSTR(loser_name,1,1);	
List all matches where the loser scored a 'bagel' set (lost a set 0-6).	SELECT * FROM matches WHERE score LIKE '%0-6%' OR score LIKE '%6-0%';	
Find tournaments never won by players under 25.	SELECT DISTINCT tourney_name FROM matches WHERE tourney_name NOT IN (SELECT tourney_name FROM matches WHERE winner_age < 25);	
List matches with more than five sets played.	SELECT * FROM matches WHERE LENGTH(score) - LENGTH(REPLACE(score, ' ', '')) + 1 > 5;	
Which players made their debut in 2005?	SELECT name FROM players WHERE dob > 19870101 AND player_id IN (SELECT winner_id FROM matches WHERE tourney_date BETWEEN 20050101 AND 20051231 UNION SELECT loser_id FROM matches WHERE tourney_date BETWEEN 20050101 AND 20051231);	
How many matches ended with a tiebreak in the final set?	SELECT COUNT(*) FROM matches WHERE score LIKE '%7-6%' AND (score LIKE '% 7-6' OR score LIKE '%7-6%');	
List tournaments with the most five-set matches.	SELECT tourney_name, COUNT(*) as five_set FROM matches WHERE LENGTH(score) - LENGTH(REPLACE(score,' ',''))+1 = 5 GROUP BY tourney_name ORDER BY five_set DESC LIMIT 1;	
Which player had the most consecutive match wins in 2021?	SELECT winner_name, MAX(streak) FROM (SELECT winner_name, COUNT(*) as streak FROM matches WHERE tourney_date BETWEEN 20210101 AND 20211231 GROUP BY winner_name, tourney_date ORDER BY tourney_date) GROUP BY winner_name ORDER BY streak DESC LIMIT 1;	
List tournaments played by exactly two players from France.	SELECT tourney_name FROM (SELECT tourney_name, COUNT(DISTINCT winner_name) as f_wins, COUNT(DISTINCT loser_name) as f_losses FROM matches WHERE winner_ioc='FRA' OR loser_ioc='FRA' GROUP BY tourney_name HAVING f_wins + f_losses = 2);	
Show all winners whose opponent was ranked in the top 10 at the match date.	SELECT matches.winner_name FROM matches JOIN rankings ON matches.tourney_date=rankings.ranking_date AND matches.loser_id=rankings.player WHERE rank <= 10;	
How many distinct players won at least once in 2020?	SELECT COUNT(DISTINCT winner_name) FROM matches WHERE tourney_date BETWEEN 20200101 AND 20201231;	
List all players who never lost to 'Rafael Nadal'.	SELECT name FROM players WHERE name NOT IN (SELECT loser_name FROM matches WHERE winner_name='Rafael Nadal');	
Which player had the highest number of different doubles partners?	SELECT name, COUNT(DISTINCT partner) as partners FROM (SELECT winner1_name as name, winner2_name as partner FROM matches WHERE winner1_id IS NOT NULL UNION ALL SELECT winner2_name as name, winner1_name as partner FROM matches WHERE winner2_id IS NOT NULL) GROUP BY name ORDER BY partners DESC LIMIT 1;	
List tournaments with more than 10 different nationalities among winners.	SELECT tourney_name FROM (SELECT tourney_name, COUNT(DISTINCT winner_ioc) as countries FROM matches GROUP BY tourney_name) WHERE countries > 10;	
List all matches where the loser had a higher average match time than the winner in 2021.	SELECT m1.tourney_name, m1.winner_name, m1.loser_name FROM matches m1 JOIN (SELECT loser_name, AVG(minutes) as avg_time FROM matches WHERE tourney_date BETWEEN 20210101 AND 20211231 GROUP BY loser_name) l ON m1.loser_name=l.loser_name JOIN (SELECT winner_name, AVG(minutes) as avg_time FROM matches WHERE tourney_date BETWEEN 20210101 AND 20211231 GROUP BY winner_name) w ON m1.winner_name=w.winner_name WHERE l.avg_time > w.avg_time;	
Which player won matches in every month of 2022?	SELECT winner_name FROM (SELECT winner_name, COUNT(DISTINCT STRFTIME('%m',tourney_date)) as months FROM matches WHERE tourney_date BETWEEN 20220101 AND 20221231 GROUP BY winner_name) WHERE months=12;	
List players who have won doubles and singles matches in the same tournament.	SELECT DISTINCT winner_name FROM matches WHERE tourney_name IN (SELECT tourney_name FROM matches WHERE winner1_id IS NOT NULL) AND tourney_name IN (SELECT tourney_name FROM matches WHERE winner1_id IS NULL);	
How many left-handed players ranked in the top 30 in 2024?	SELECT COUNT(DISTINCT players.player_id) FROM rankings JOIN players ON rankings.player=players.player_id WHERE ranking_date BETWEEN 20240101 AND 20241231 AND rank<=30 AND hand='left';	
List all player names.	SELECT name FROM players;	
Show all tournaments.	SELECT DISTINCT tourney_name FROM matches;	
List all countries represented.	SELECT DISTINCT ioc FROM players;	
Show all right-handed players.	SELECT name FROM players WHERE hand = 'R';	
How many matches did Rafael Nadal win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Rafael Nadal';	
List all losses by Novak Djokovic.	SELECT loser_name FROM matches WHERE loser_name = 'Novak Djokovic';	
What is the tallest player height?	SELECT MAX(height) FROM players;	
Show all players from USA.	SELECT name FROM players WHERE ioc = 'USA';	
List all players from France.	SELECT name FROM players WHERE ioc = 'FRA';	
How many matches were played in 2022?	SELECT COUNT(*) FROM matches WHERE tourney_date BETWEEN 20220101 AND 20221231;	
Show all matches where Roger Federer won.	SELECT tourney_name FROM matches WHERE winner_name = 'Roger Federer';	
How many singles matches are there?	SELECT COUNT(*) FROM matches WHERE winner1_id IS NULL;	
List all tournaments in 2023.	SELECT DISTINCT tourney_name FROM matches WHERE tourney_date BETWEEN 20230101 AND 20231231;	
Show the tallest 5 players.	SELECT name, height FROM players ORDER BY height DESC LIMIT 5;	
Show the shortest 5 players.	SELECT name, height FROM players ORDER BY height ASC LIMIT 5;	
How many players are from Germany?	SELECT COUNT(*) FROM players WHERE ioc = 'GER';	
List all player names and their countries.	SELECT name, ioc FROM players;	
Show players taller than 190 cm.	SELECT name FROM players WHERE height > 190;	
How many unique losers are there?	SELECT COUNT(DISTINCT loser_name) FROM matches;	
What is the shortest match ever?	SELECT MIN(minutes) FROM matches;	
What is the average match duration?	SELECT AVG(minutes) FROM matches;	
List all matches longer than 3 hours.	SELECT tourney_name, minutes FROM matches WHERE minutes > 180;	
List all matches shorter than 30 minutes.	SELECT tourney_name, minutes FROM matches WHERE minutes < 30;	
Show all tournaments with exactly 10 matches.	SELECT tourney_name FROM matches GROUP BY tourney_name HAVING COUNT(*) = 10;	
What country has the most players?	SELECT ioc, COUNT() FROM players GROUP BY ioc ORDER BY COUNT() DESC LIMIT 1;	
How many players are there from each country?	SELECT ioc, COUNT(*) FROM players GROUP BY ioc;	
List all matches in the Australian Open.	SELECT * FROM matches WHERE tourney_name LIKE '%Australian%';	
List all matches in Wimbledon.	SELECT * FROM matches WHERE tourney_name LIKE '%Wimbledon%';	
How many matches were won by left-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand = 'L';	
How many matches were won by right-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand = 'R';	
Show all matches where the winner was older than 30.	SELECT tourney_name, winner_name, winner_age FROM matches WHERE winner_age > 30;	
Show all matches where the winner was younger than 20.	SELECT tourney_name, winner_name, winner_age FROM matches WHERE winner_age < 20;	
How many players are over 190 cm tall?	SELECT COUNT(*) FROM players WHERE height > 190;	
How many players are under 170 cm tall?	SELECT COUNT(*) FROM players WHERE height < 170;	
What is the score of the longest match?	SELECT score FROM matches ORDER BY minutes DESC LIMIT 1;	
List 10 random matches.	SELECT * FROM matches LIMIT 10;	
Show the first 5 players alphabetically.	SELECT name FROM players ORDER BY name ASC LIMIT 5;	
Show all matches in 2021.	SELECT * FROM matches WHERE tourney_date BETWEEN 20210101 AND 20211231;	
List all Italian players.	SELECT name FROM players WHERE ioc = 'ITA';	
Show all matches from 2020.	SELECT * FROM matches WHERE tourney_date BETWEEN 20200101 AND 20201231;	
What is the average age of all winners?	SELECT AVG(winner_age) FROM matches;	
Show all players who are 180 cm tall.	SELECT name FROM players WHERE height = 180;	
List all British players.	SELECT name FROM players WHERE ioc = 'GBR';	
List all Canadian players.	SELECT name FROM players WHERE ioc = 'CAN';	
How many matches were won by players aged 25?	SELECT COUNT(*) FROM matches WHERE winner_age = 25;	
Show all matches from January 2023.	SELECT * FROM matches WHERE tourney_date BETWEEN 20230101 AND 20230131;	
What is the most common winner score?	SELECT score, COUNT() FROM matches GROUP BY score ORDER BY COUNT() DESC LIMIT 1;	
How many singles matches were in 2022?	SELECT COUNT(*) FROM matches WHERE winner1_id IS NULL AND tourney_date BETWEEN 20220101 AND 20221231;	
List all matches with a score of '6-4 6-3'.	SELECT * FROM matches WHERE score = '6-4 6-3';	
How many players are from Switzerland?	SELECT COUNT(*) FROM players WHERE ioc = 'SUI';	
How many matches lasted exactly 100 minutes?	SELECT COUNT(*) FROM matches WHERE minutes = 100;	
List all matches over 200 minutes.	SELECT tourney_name FROM matches WHERE minutes > 200;	
Show all Australian players.	SELECT name FROM players WHERE ioc = 'AUS';	
What is the oldest player in the database?	SELECT name FROM players ORDER BY dob ASC LIMIT 1;	
What is the youngest player in the database?	SELECT name FROM players ORDER BY dob DESC LIMIT 1;	
List all Czech players.	SELECT name FROM players WHERE ioc = 'CZE';	
How many matches were in the year 2019?	SELECT COUNT(*) FROM matches WHERE tourney_date BETWEEN 20190101 AND 20191231;	
Show all matches won by players from Sweden.	SELECT tourney_name FROM matches WHERE winner_ioc = 'SWE';	
How many matches were won by players over 200 cm?	SELECT COUNT(*) FROM matches WHERE winner_ht > 200;	
List all matches lost by players under 170 cm.	SELECT tourney_name FROM matches WHERE loser_ht < 170;	
How many players have a height of 180 cm or more?	SELECT COUNT(*) FROM players WHERE height >= 180;	
How many players have a height less than 180 cm?	SELECT COUNT(*) FROM players WHERE height < 180;	
Show all matches between 100 and 150 minutes.	SELECT tourney_name FROM matches WHERE minutes BETWEEN 100 AND 150;	
List all rankings from 2023.	SELECT * FROM rankings WHERE ranking_date BETWEEN 20230101 AND 20231231;	
What is the highest ranking ever achieved?	SELECT MIN(rank) FROM rankings;	
What is the lowest ranking in the database?	SELECT MAX(rank) FROM rankings;	
How many players are ranked number 1?	SELECT COUNT(DISTINCT player) FROM rankings WHERE rank = 1;	
Show all top 5 ranked players.	SELECT DISTINCT player FROM rankings WHERE rank <= 5;	
List all Belgian players.	SELECT name FROM players WHERE ioc = 'BEL';	
How many matches were played in Japan?	SELECT COUNT(*) FROM matches WHERE winner_ioc = 'JPN' OR loser_ioc = 'JPN';	
Show all players who are 175 cm tall.	SELECT name FROM players WHERE height = 175;	
List all matches with a best_of value of 3.	SELECT * FROM matches WHERE best_of = '3';	
How many matches did Novak Djokovic win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Novak Djokovic';	
How many matches did Roger Federer lose?	SELECT COUNT(*) FROM matches WHERE loser_name = 'Roger Federer';	
How many matches did Stan Wawrinka win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Stan Wawrinka';	
List all matches where Rafael Nadal lost.	SELECT tourney_name FROM matches WHERE loser_name = 'Rafael Nadal';	
How many matches did Dominic Thiem win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Dominic Thiem';	
Show all matches lost by Matteo Berrettini.	SELECT tourney_name FROM matches WHERE loser_name = 'Matteo Berrettini';	
How many matches did Daniil Medvedev win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Daniil Medvedev';	
List all matches won by Alexander Zverev.	SELECT tourney_name FROM matches WHERE winner_name = 'Alexander Zverev';	
How many matches did Stefanos Tsitsipas lose?	SELECT COUNT(*) FROM matches WHERE loser_name = 'Stefanos Tsitsipas';	
Show all matches won by Gael Monfils.	SELECT tourney_name FROM matches WHERE winner_name = 'Gael Monfils';	
How many matches did David Ferrer win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'David Ferrer';	
List all matches where Juan Martin del Potro lost.	SELECT tourney_name FROM matches WHERE loser_name = 'Juan Martin del Potro';	
How many matches did Tommy Paul win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Tommy Paul';	
Show all matches lost by Taylor Fritz.	SELECT tourney_name FROM matches WHERE loser_name = 'Taylor Fritz';	
How many matches did Felix Auger-Aliassime win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Felix Auger-Aliassime';	
List all matches won by Cameron Norrie.	SELECT tourney_name FROM matches WHERE winner_name = 'Cameron Norrie';	
How many matches did Jannik Sinner lose?	SELECT COUNT(*) FROM matches WHERE loser_name = 'Jannik Sinner';	
Show all matches won by Carlos Alcaraz.	SELECT tourney_name FROM matches WHERE winner_name = 'Carlos Alcaraz';	
How many matches did Matteo Berrettini win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Matteo Berrettini';	
List all matches where Andy Murray lost.	SELECT tourney_name FROM matches WHERE loser_name = 'Andy Murray';	
How many matches did Grigor Dimitrov win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Grigor Dimitrov';	
Show all matches lost by Milos Raonic.	SELECT tourney_name FROM matches WHERE loser_name = 'Milos Raonic';	
How many matches did Nick Kyrgios win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Nick Kyrgios';	
List all matches won by Andrey Rublev.	SELECT tourney_name FROM matches WHERE winner_name = 'Andrey Rublev';	
How many matches did Diego Schwartzman lose?	SELECT COUNT(*) FROM matches WHERE loser_name = 'Diego Schwartzman';	
Show all matches won by Gaston Gaudio.	SELECT tourney_name FROM matches WHERE winner_name = 'Gaston Gaudio';	
How many matches did Tommy Haas win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Tommy Haas';	
List all matches where Richard Gasquet lost.	SELECT tourney_name FROM matches WHERE loser_name = 'Richard Gasquet';	
How many matches did Kei Nishikori win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Kei Nishikori';	
Show all matches lost by Philipp Petzschner.	SELECT tourney_name FROM matches WHERE loser_name = 'Philipp Petzschner';	
How many matches did Mardy Fish win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Mardy Fish';	
List all matches won by Robby Ginepri.	SELECT tourney_name FROM matches WHERE winner_name = 'Robby Ginepri';	
How many matches did Lleyton Hewitt lose?	SELECT COUNT(*) FROM matches WHERE loser_name = 'Lleyton Hewitt';	
Show all matches won by Marin Cilic.	SELECT tourney_name FROM matches WHERE winner_name = 'Marin Cilic';	
How many matches did Igor Andreev win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Igor Andreev';	
List all matches where Gilles Simon lost.	SELECT tourney_name FROM matches WHERE loser_name = 'Gilles Simon';	
How many matches did Fernando Verdasco win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Fernando Verdasco';	
Show all matches lost by Tomas Berdych.	SELECT tourney_name FROM matches WHERE loser_name = 'Tomas Berdych';	
How many matches did Tommy Robredo win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Tommy Robredo';	
List all matches won by Albert Montanes.	SELECT tourney_name FROM matches WHERE winner_name = 'Albert Montanes';	
How many matches did Adrian Mannarino lose?	SELECT COUNT(*) FROM matches WHERE loser_name = 'Adrian Mannarino';	
Show all matches won by John McEnroe.	SELECT tourney_name FROM matches WHERE winner_name = 'John McEnroe';	
How many matches did Pete Sampras win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Pete Sampras';	
List all matches where Andre Agassi lost.	SELECT tourney_name FROM matches WHERE loser_name = 'Andre Agassi';	
How many matches did Bjorn Borg win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Bjorn Borg';	
Show all matches lost by Jimmy Connors.	SELECT tourney_name FROM matches WHERE loser_name = 'Jimmy Connors';	
How many matches did Arthur Ashe win?	SELECT COUNT(*) FROM matches WHERE winner_name = 'Arthur Ashe';	
How many matches did Novak Djokovic and Rafael Nadal play against each other?	SELECT COUNT(*) FROM matches WHERE (winner_name = 'Novak Djokovic' AND loser_name = 'Rafael Nadal') OR (winner_name = 'Rafael Nadal' AND loser_name = 'Novak Djokovic');	
Show all matches won by players from France in 2022.	SELECT tourney_name FROM matches WHERE winner_ioc = 'FRA' AND tourney_date BETWEEN 20220101 AND 20221231;	
How many matches ended in exactly 120 minutes?	SELECT COUNT(*) FROM matches WHERE minutes = 120;	
List all tournaments where Roger Federer played.	SELECT DISTINCT tourney_name FROM matches WHERE winner_name = 'Roger Federer' OR loser_name = 'Roger Federer';	
How many matches were played between left-handed and right-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand <> loser_hand;	
List all tournaments in alphabetical order.	SELECT DISTINCT tourney_name FROM matches ORDER BY tourney_name ASC;	
List all left-handed players.	SELECT name FROM players WHERE hand = 'L';	
Show all matches where a left-handed player won.	SELECT tourney_name, winner_name FROM matches WHERE winner_hand = 'L';	
Show all matches where a right-handed player won.	SELECT tourney_name, winner_name FROM matches WHERE winner_hand = 'R';	
How many matches were lost by left-handed players?	SELECT COUNT(*) FROM matches WHERE loser_hand = 'L';	
How many matches were lost by right-handed players?	SELECT COUNT(*) FROM matches WHERE loser_hand = 'R';	
List all matches where a left-handed player lost.	SELECT tourney_name, loser_name FROM matches WHERE loser_hand = 'L';	
List all matches where a right-handed player lost.	SELECT tourney_name, loser_name FROM matches WHERE loser_hand = 'R';	
How many matches were between two left-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand = 'L' AND loser_hand = 'L';	
How many matches were between two right-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand = 'R' AND loser_hand = 'R';	
How many matches were between a left-handed and right-handed player?	SELECT COUNT(*) FROM matches WHERE (winner_hand = 'L' AND loser_hand = 'R') OR (winner_hand = 'R' AND loser_hand = 'L');	
Show all left-handed players from USA.	SELECT name FROM players WHERE hand = 'L' AND ioc = 'USA';	
Show all right-handed players from Spain.	SELECT name FROM players WHERE hand = 'R' AND ioc = 'ESP';	
How many left-handed players are from France?	SELECT COUNT(*) FROM players WHERE hand = 'L' AND ioc = 'FRA';	
How many right-handed players are from Germany?	SELECT COUNT(*) FROM players WHERE hand = 'R' AND ioc = 'GER';	
List matches won by left-handed players in 2023.	SELECT tourney_name FROM matches WHERE winner_hand = 'L' AND tourney_date BETWEEN 20230101 AND 20231231;	
List matches won by right-handed players in 2022.	SELECT tourney_name FROM matches WHERE winner_hand = 'R' AND tourney_date BETWEEN 20220101 AND 20221231;	
Show all left-handed players taller than 190 cm.	SELECT name FROM players WHERE hand = 'L' AND height > 190;	
Show all right-handed players shorter than 170 cm.	SELECT name FROM players WHERE hand = 'R' AND height < 170;	
How many left-handed players are taller than 185 cm?	SELECT COUNT(*) FROM players WHERE hand = 'L' AND height > 185;	
How many right-handed players are shorter than 175 cm?	SELECT COUNT(*) FROM players WHERE hand = 'R' AND height < 175;	
What is the average height of left-handed players?	SELECT AVG(height) FROM players WHERE hand = 'L';	
What is the average height of right-handed players?	SELECT AVG(height) FROM players WHERE hand = 'R';	
List all left-handed players sorted by height.	SELECT name, height FROM players WHERE hand = 'L' ORDER BY height DESC;	
List all right-handed players sorted by height.	SELECT name, height FROM players WHERE hand = 'R' ORDER BY height ASC;	
Show matches where both players were left-handed.	SELECT tourney_name FROM matches WHERE winner_hand = 'L' AND loser_hand = 'L';	
Show matches where both players were right-handed.	SELECT tourney_name FROM matches WHERE winner_hand = 'R' AND loser_hand = 'R';	
How many matches in 2021 were won by left-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand = 'L' AND tourney_date BETWEEN 20210101 AND 20211231;	
How many matches in 2021 were won by right-handed players?	SELECT COUNT(*) FROM matches WHERE winner_hand = 'R' AND tourney_date BETWEEN 20210101 AND 20211231;	
List left-handed players from Australia.	SELECT name FROM players WHERE hand = 'L' AND ioc = 'AUS';	
List right-handed players from Switzerland.	SELECT name FROM players WHERE hand = 'R' AND ioc = 'SUI';	
How many left-handed players from Canada are in the database?	SELECT COUNT(*) FROM players WHERE hand = 'L' AND ioc = 'CAN';	
How many right-handed players from Italy are in the database?	SELECT COUNT(*) FROM players WHERE hand = 'R' AND ioc = 'ITA';	
Show the tallest left-handed player.	SELECT name, height FROM players WHERE hand = 'L' ORDER BY height DESC LIMIT 1;	
Show the shortest right-handed player.	SELECT name, height FROM players WHERE hand = 'R' ORDER BY height ASC LIMIT 1;	
How many left-handed players won more than 10 matches?	SELECT COUNT(DISTINCT winner_name) FROM matches WHERE winner_hand = 'L' GROUP BY winner_name HAVING COUNT(*) > 10;	
How many right-handed players lost more than 10 matches?	SELECT COUNT(DISTINCT loser_name) FROM matches WHERE loser_hand = 'R' GROUP BY loser_name HAVING COUNT(*) > 10;