sql經常使用面試題

--一、查詢"1"課程比"2"課程成績高的全部學生的學號； select d.S# from (select b.S#,b.score as b_score,c.score as c_score from (select S#,score from Sc WHERE C#=1) b inner join (select S#,score from Sc WHERE C#=2) c on b.S

>>阅读原文<<