query: SELECT Stuid ,  sum(hours_played) FROM Plays_games GROUP BY Stuid
question: What-all the ids of all students played one and a number of alla hour?
query_toks: SELECT Stuid , sum ( hours_played ) FROM Plays_games GROUP BY Stuid
query_toks_no_value: select stuid , sum ( hours_played ) from plays_games group by stuid
question_toks: What-all the ids of all students played one and a number of alla hour?