错误在查询中使用WHERE IN

Question

这是我尝试运行查询：

Select Status from [transaction] where TransactionID IN (select MAX(CAST(TransactionID AS VARCHAR(36))), sum(debit) 
FROM [transaction] 
WHERE dbo.getday(StartSaleTime) >= '5/1/2011' and dbo.getday(StartSaleTime) <= '5/3/2011' and Status > -1 And TransactionNo like 'EL%' And TransactionType = 4 
GROUP BY CustomerID, debit HAVING (COUNT(CustomerID) > 1)) 

它返回此错误：

Only one expression can be specified in the select list when the subquery is not introduced with EXISTS. 

Answer 1

它告诉你到底什么是错误的错误信息。当使用in时，您只能在选择列表中指定一列。

如果你改变你的查询，这应该工作正常。

Select Status from [transaction] where TransactionID 

IN (select MAX(CAST(TransactionID AS VARCHAR(36))) as [TransactionID] 
FROM [transaction] 
WHERE dbo.getday(StartSaleTime) >= '5/1/2011' and dbo.getday(StartSaleTime) <= '5/3/2011' and Status > -1 And TransactionNo like 'EL%' And TransactionType = 4 
GROUP BY CustomerID, debit HAVING (COUNT(CustomerID) > 1)) 

使用EXISTS不IN

只有当你可以指定多个列，但

Answer 2

您选择两件事情，并尝试使用与（ ）。在尝试执行someId In（Id列表）时，您应该只选择ID。

Answer 3

您的子查询必须只返回一个字段。现在你回到二，让整个查询看起来有点像：

SELECT ... WHERE TransactionID IN ((a,b), (c,d), etc...) 

SQL Server不知道使用的IN东西哪列，所以它的抱怨。