SQL Server 中怎么交叉表查詢case

SQL Server 中怎么交叉表查詢case，相信很多沒有經(jīng)驗(yàn)的人對此束手無策，為此本文總結(jié)了問題出現(xiàn)的原因和解決方法，通過這篇文章希望你能解決這個(gè)問題。

代碼如下所示：

表landundertake結(jié)構(gòu)如下所示：

表appraiser結(jié)構(gòu)如下所示：

access代碼：復(fù)制代碼 代碼如下: TRANSFORM First(Landundertake.valuerId) AS valuerId之First SELECT Appraiser.quarterId, Landundertake.landCode FROM Landundertake INNER JOIN Appraiser ON (Landundertake .valuerId = Appraiser.valuerID) AND (Landundertake .quarterId = Appraiser.quarterId) GROUP BY Appraiser.quarterId, Landundertake .landCode PIVOT Landundertake .valuerGrade;

SQL server代碼：復(fù)制代碼 代碼如下: select dbo.appraiser.quarterID,dbo.landUndertake.landcode,case dbo.landUndertake.appraiserGrade when 'appraiserID1' then dbo.landundertake.appraiserID else null END as appraiserID,case dbo.landUndertake.appraiserGrade when 'appraiserID2' then dbo.landundertake.appraiserID else null END as appraiserID1 from dbo.LandUndertake inner join dbo.Appraiser ON dbo.LandUndertake.quarterID=dbo.appraiser.quarterID and dbo.landundertake.appraiserID=DBO.Appraiser.appraiserID Group by dbo.appraiser.quarterID,dbo.landUndertake.landcode,dbo.landundertake.appraiserGrade,dbo.landundertake.appraiserID

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