sql - 更新语句未使用别名编译

Question

这是我未编译的更新语句：

Update Documents d
        Set 
            DocumentDate = 1,
            LastStatusChangedDateTime = (
                Select Top 1 DATEADD(ss,1,StatusChangedDateTime)
                    From [dbo].[DocumentStatusesHistory] dsh
                        Where dsh.DocumentID = d.DocumentID
            )
            Where DocumentID In
            (
                Select Data From dbo.Split(@DocumentIDs,',')
            )

我无法使用 d 作为别名。我怎样才能解决这个问题？

Answer 1

这个怎么样？

    Update Documents 
        Set 
            DocumentDate = 1,
            LastStatusChangedDateTime = (
                Select Top 1 DATEADD(ss,1,StatusChangedDateTime)
                    From [dbo].[DocumentStatusesHistory] dsh
                        Where dsh.DocumentID = d.DocumentID
            )
        From Documents d
            Where DocumentID In
            (
                Select Data From dbo.Split(@DocumentIDs,',')
            )

Answer 2

添加FROM子句：

Update d
Set 
DocumentDate = 1,
LastStatusChangedDateTime = (
                Select Top 1 DATEADD(ss,1,StatusChangedDateTime)
                    From [dbo].[DocumentStatusesHistory] dsh
                        Where dsh.DocumentID = d.DocumentID
)
FROM Documents AS d
...

Answer 3

试试这个：

UPDATE  d
SET     d.DocumentDate = 1 ,
        d.LastStatusChangedDateTime = ( SELECT TOP 1
                                            DATEADD(ss, 1,
                                                    StatusChangedDateTime)
                                        FROM    [dbo].[DocumentStatusesHistory] dsh
                                        WHERE   dsh.DocumentID = d.DocumentID
                                  )

FROM Documents d WHERE d.DocumentID IN ( SELECT Data FROM dbo.Split(@DocumentIDs, ',') )