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我有一个查询从表可以包含多个时间的表中得到A.QID
。它通常会发生12次,因为每个月有一次数据导入。TSQL Group By Query
我只需要一次查询他们的数据,所以我需要在A.QID
字段上做DISTINCT
,但我遇到了麻烦。
SELECT A.QID,
(SELECT TOP 1 E.[FirstName], -- Now we need to figure out who this person is by checking the historical table
E.[LastName],
E.[NTID],
E.[TitleDesc]
FROM employeeTable_historical AS E
WHERE E.qid = A.[QID]
AND CONVERT (DATE, A.[timestamp]) > CONVERT (DATE, E.[Meta_LogDate])
ORDER BY meta_logDate DESC
FOR XML PATH (''), TYPE, ELEMENTS)
FROM [red].[dbo].[attritionCounts] AS A
WHERE A.[mgrQID] = @director -- Search all people managers under this director
AND YEAR(CAST (A.[timestamp] AS DATE)) = @year
ORDER BY A.lvl
我试过SELECT DISTINCT(A.QID) ...
但没有工作要么,得到这个错误The xml data type cannot be selected as DISTINCT because it is not comparable.
用这个得到一些错误。它不会将任何东西绑定到'A'别名以及'无效的列名'DISINCT'.' – SBB 2014-10-08 21:33:54
我修复了打字错误,现在它只是底部选择没有绑定到'A' – SBB 2014-10-08 21:37:33
对不起,复制并粘贴您的东西,应该看起来好一点。现在就去。 – Steve 2014-10-08 21:42:11