50个常用sql语句
作者 佚名技术
来源 数据库编程
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发布时间 2012-03-21
第 6 名的学生成绩单:企业管理(001),马克思(002),UML (003),数据库(004) [学生ID],[学生姓名],企业管理,马克思,UML,数据库,平均成绩 SELECT DISTINCT top 3 SC.S# As 学生学号, Student.Sname AS 学生姓名 , T1.score AS 企业管理, T2.score AS 马克思, T3.score AS UML, T4.score AS 数据库, ISNULL(T1.score,0) + ISNULL(T2.score,0) + ISNULL(T3.score,0) + ISNULL(T4.score,0) as 总分 FROM Student,SC LEFT JOIN SC AS T1 ON SC.S# = T1.S# AND T1.C# = ''001'' LEFT JOIN SC AS T2 ON SC.S# = T2.S# AND T2.C# = ''002'' LEFT JOIN SC AS T3 ON SC.S# = T3.S# AND T3.C# = ''003'' LEFT JOIN SC AS T4 ON SC.S# = T4.S# AND T4.C# = ''004'' WHERE student.S#=SC.S# and ISNULL(T1.score,0) + ISNULL(T2.score,0) + ISNULL(T3.score,0) + ISNULL(T4.score,0) NOT IN (SELECT DISTINCT TOP 15 WITH TIES ISNULL(T1.score,0) + ISNULL(T2.score,0) + ISNULL(T3.score,0) + ISNULL(T4.score,0) FROM sc LEFT JOIN sc AS T1 ON sc.S# = T1.S# AND T1.C# = ''k1'' LEFT JOIN sc AS T2 ON sc.S# = T2.S# AND T2.C# = ''k2'' LEFT JOIN sc AS |
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