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sql sErvEr 统计分析

举例说明: 比较简单的语句: 代码如下: 1 SET STATISTICS TIME ON 2 USE [pratice] 3 GO 4 SELECT * FROM [dbo].[Orders] 结果: 代码如下: SQL Server 分析和编译时间: CPU 时间 = 0 毫秒,占用时间 = 0 毫秒。 SQL Server 执行时间: CPU 时间...

select customer,max(lntime) as lntime from 表A group by customer

select '上期' as '期间' ,sum(sl) sl,sum(je) je from subfhd where kdrq between '2016-06-01' and '2016-06-30'union select '本期' as '期间',sum(sl) sl,sum(je) je from subfhd where kdrq between '2016-07-01' and '2016-07-31'

---ms sql server SELECT TB.TestDateID,AVG(TB.CountScores) AS AVG_SCORE FROM( SELECT *,ROW_NUMBER()OVER(PARTITION BY TestDateID ORDER BY CountScores DESC) AS NUMBER FROM DFH_StuScores) TB WHERE TB.YearID='某年' AND TB.NUMBER

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