SUM OVER PARTITION BY ORDER BY(分组累计计算方法)
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仅限SQL SERVER2012以上版本
create table TEST(ID int identity(1,1),NAME NVARCHAR(50),GROUPNAME NVARCHAR(50),GRADE INT,DIRECTION INT)DROP TABLE TESTINSERT INTO TEST(NAME,GROUPNAME,GRADE,DIRECTION)SELECT '小明','开发部',90,-1 UNION ALLSELECT '小张','开发部',89,+1 UNION ALLSELECT '小白','开发部',100,-1 UNION ALLSELECT '小王','财务部',70,-1 UNION ALLSELECT '小赵','财务部',69,+1 UNION ALLSELECT '小柳','财务部',90,+1 UNION ALLSELECT '小高','行政部',78,-1 UNION ALLSELECT '小王','行政部',77,+1 UNION ALLSELECT '小李','行政部',99,-1 UNION ALLSELECT '小吴','行政部',34,-1SELECT * FROM TESTSELECT ID, NAME, GROUPNAME, GRADE, DIRECTION, SUM(GRADE*DIRECTION) OVER(PARTITION BY GROUPNAME ORDER BY ID) AS ACCUMULATIONFROM TEST阅读全文
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