有四張表:Course(課程)、SC(成績)、Student(學生)、Teacher(老師)spa
想法:這裏用到SC和Student兩個表,首先得先肯定篩選條件,01課程成績小於60。而後,LEFT JOIN鏈接Student,再用到了ORDER BY ... DESCcode
注意:降序(從高到低或從大到小)爲DESC,升序(從低到高或從小到大)爲ASC,若是省略ASC或DESC系統則默認爲升序
blog
1 use LoginDB 2 go 3 select t1.sid as 學號,sname as 姓名,score as 成績 --,sage as 出生年月,ssex as 性別 4 from 5 ( 6 select * from SC where cid = 01 and score < 60 7 )t1 8 left join Student 9 on t1.sid = Student.sid order by score desc
結果以下:ci
各位如有建議與疑問,歡迎提出討論;如有什麼不對之處,歡迎批評指正。class