常用的sql语句,学生、课程、成绩、教师表的查询

常用的sql语句,学生、课程、成绩、教师表的查询


2024年1月9日发(作者:)

,100 * 255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '001' AND score

style="color: rgb(128, 128, 128);">>= 60 THEN 1 ELSE

0 END)/255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '001' THEN 1

style="color: rgb(0, 0, 255);">ELSE 0 END)

style="color: rgb(0, 0, 255);">AS 企业管理及格百分数 ,SUM(CASE WHEN C# = '002' THEN score ELSE 0 END)/SUM(CASE C# WHEN '002' THEN 1 ELSE 0 END) AS 马克平均分 ,100 * 255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '002' AND score

style="color: rgb(128, 128, 128);">>= 60 THEN 1 ELSE

0 END)/255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '002' THEN 1

style="color: rgb(0, 0, 255);">ELSE 0 END)

style="color: rgb(0, 0, 255);">AS 马克及格百分数 ,SUM(CASE WHEN C# = '003' THEN score ELSE 0 END)/SUM(CASE C# WHEN '003' THEN 1 ELSE 0 END) AS UML平均分 ,100 * 255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '003' AND score

style="color: rgb(128, 128, 128);">>= 60 THEN 1 ELSE

0 END)/255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '003' THEN 1

style="color: rgb(0, 0, 255);">ELSE 0 END)

style="color: rgb(0, 0, 255);">AS UML及格百分数 ,SUM(CASE WHEN C# = '004' THEN score ELSE 0 END)/SUM(CASE C# WHEN '004' THEN 1 ELSE 0 END) AS 数据库平均分 ,100 * 255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '004' AND score

style="color: rgb(128, 128, 128);">>= 60 THEN 1 ELSE

0 END)/255);">SUM(CASE WHEN C# rgb(128, 128, 128);">= '004' THEN 1

style="color: rgb(0, 0, 255);">ELSE 0 END)

style="color: rgb(0, 0, 255);">AS 数据库及格百分数 FROM SC

ISNULL(,0) + ISNULL(,0) + ISNULL(,0) + ISNULL(,0) as 总分 FROM Student,SC 128);">LEFT JOIN SC AS T1

ON SC.S# = T1.S# AND T1.C# = '001'

LEFT JOIN SC 255);">AS T2

ON SC.S# = T2.S# AND T2.C# = '002'

LEFT JOIN SC 255);">AS T3

ON SC.S# = T3.S# AND T3.C# = '003'

LEFT JOIN SC 255);">AS T4

ON SC.S# = T4.S# AND T4.C# = '004'

WHERE student.S#=SC.S# 128);">and ISNULL(,0) + ISNULL(,0) + ISNULL(,0) + ISNULL(,0)

NOT IN (SELECT

DISTINCT TOP 15 WITH TIES

ISNULL(T1.score,0128);">) + ISNULL(T2rgb(128, 128, 128);">.score,0) +

style="color: rgb(255, 0, 255);">ISNULL(T3.score,0) + 255);">ISNULL(T4.scorergb(128, 128, 128);">,0)


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