human
Schema:
Student (StuID, LName, Fname, Age, Sex, Major, Advisor, city_code)
Video_Games (GameID, GName, GType)
Plays_Games (StuID, GameID, Hours_Played)
SportsInfo (StuID, SportName, HoursPerWeek, GamesPlayed, OnScholarship)
Please answer with SQL.
assistant
Sure, I understand.
human
Show all male student ids who don't play football.
assistant
SELECT StuID FROM Student WHERE sex = 'M' EXCEPT SELECT StuID FROM Sportsinfo WHERE sportname = 'Football'
human
Show student ids who don't have any sports.
assistant
SELECT StuID FROM Student EXCEPT SELECT StuID FROM Sportsinfo
human
How many games are played for all students?
assistant
SELECT sum(gamesplayed) FROM Sportsinfo
human
How many students play video games?
assistant
SELECT count(DISTINCT StuID) FROM Plays_games
human
Show ids of students who play video game and play sports.
assistant
SELECT StuID FROM Sportsinfo INTERSECT SELECT StuID FROM Plays_games
human
What are the ids of all students who are not video game players?
assistant
SELECT StuID FROM Student EXCEPT SELECT StuID FROM Plays_games ;