Question

我的查询中有子查询问题。在此查询中：

SELECT * 
FROM Statistic_RecordedConversations A
  JOIN (SELECT DID, max(DateTime) MaDate
        FROM Statistic_RecordedConversations
        where DID IN (
           Select OpenData as DID, QuestionID, InterviewID 
           from Surveys.dbo.Askia2363Data 
           where QuestionID = 895 
           and InterviewID in ( 
                select Surveys.dbo.Askia2363Data.InterviewID 
                from Surveys.dbo.Askia2363Interview, 
                     Surveys.dbo.Askia2363Data 
                where Surveys.dbo.askia2363Interview.InterviewID = 
                Surveys.dbo.Askia2363Data.InterviewID  
                and completed = 1 
                and QuestionID = 891 
                and ClosedData = 4685 
                and CAST(EndInterview as Date) = 
                CAST (Current_TIMESTAMP as Date)))
        GROUP BY DID ) B
      ON A.DID = B.DID
     AND A.DateTime = B.MaDate

我收到了msg 116的错误。我认为这是由于ligne 6，我不仅有一列。我不知道如何使这个查询工作。我尝试了IN的INISand，但结果太多，而不是我感兴趣的结果。

如果有人得到另一个解决方案，非常感谢！：）

Answer 1

您只能返回一个字段以关联IN语句内部。您只需要返回DID。

where DID IN ( Select OpenData as DID from Surveys.dbo.Askia2363Data...

sql server错误消息116，如何绕过

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