Clever Geek Handbook

Merge Statement and ID Insertion

I am using the Merge statement to enter / update data in my stored procedure.

MERGE [dbo].[tReserveData_4541] AS Target
USING (SELECT * FROM  [dbo].[tblcangrowhitesh]) AS Source
ON ( [Source].[PK_ID] =  [Target].[PK_ID])

WHEN MATCHED THEN
    UPDATE SET [Target].[mgender] = Source.[mgender]

WHEN NOT MATCHED BY TARGET THEN
    INSERT ([Granularity], [PK_ID], [ROWID], 
            [mgender], [mma1], [mma2], [mma3], 
            [mmadmincost], [mmcumulativevolume], 
            [mmcurrency], [mmdate],
            [mmfileimporteddate], [mmfilename])
    VALUES ([Source].[Granularity], [Source].[PK_ID], [Source].[ROWID],
            [Source].[mgender], [Source].[mma1], [Source].[mma2], [Source].[mma3], 
            [Source].[mmadmincost], [Source].[mmcumulativevolume],
            [Source].[mmcurrency], [Source].[mmdate],
            [Source].[mmfileimporteddate], [Source].[mmfilename])

As you can see, I am going to insert the ie id column [PK_ID]

into the statement MERGE

. But I cannot do this.

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2 answers


I'm not familiar with the command MERGE

, but since you are inserting directly into the ID column, you won't need to use the IDENTITY_INSERT command? eg.



SET IDENTITY_INSERT [dbo].[tReserveData_4541] on

MERGE...

SET IDENTITY_INSERT [dbo].[tReserveData_4541] off
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Remove the IDENTITY property on the PK_ID if you don't need to create values ​​for the target.

You can add PK_ID_temp column for this UPDATE [dbo].[tReserveData_4541] SET PK_ID_temp = PK_ID

. Drop the PK_ID column and then rename PK_ID_temp back to PK_ID.



It may also require resetting the Primary Key, resetting any linked indexes, and rebuilding all nonclustered indexes if it is a clustered index.

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