Is there any way to use SCOPE_IDENTITY if using a multiple insert statement?

c# .net sql spring.net scope-identity
Thorsten Kraus picture Thorsten Kraus · Nov 15, 2012 · Viewed 14.5k times · Source

I will import many data rows from a csv file into a SQL Server database (through a web application). I need the auto generated id value back for the client.

If I do this in a loop, the performance is very bad (but I can use SCOPE_IDENTITY() without any problems).

A more performant solution would be a way like this:

INSERT INTO [MyTable]
VALUES ('1'), ('2'), ('3')
SELECT SCOPE_IDENTITY()

Is there any way to get all generated IDs and not only the last generated id?

Thanks for your help!

Best regards, Thorsten

Answer

marc_s picture marc_s · Nov 15, 2012

No, SCOPE_IDENTITY() only gives you the one, latest inserted IDENTITY value. But you could check out the OUTPUT clause of SQL Server ....

DECLARE @IdentityTable TABLE (SomeKeyValue INT, NewIdentity INT)

INSERT INTO [MyTable]
OUTPUT Inserted.Keyvalue, Inserted.ID INTO @IdentityTable(SomeKeyValue, NewIdentity)
VALUES ('1'), ('2'), ('3')

Once you've run your INSERT statement, the table variable will hold "some key value" (for you, to identify the row) and the newly inserted ID values for each row inserted. Now go crazy with this! :-)

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