On SQL INSERT can I use the identity column for part of the insert data in another column at the same time?

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轻奢々 2021-01-24 07:47
CREATE TABLE Table1 :
Id int IDENTITY(1,1),
PK_Column1 nvarchar(50) Primary Key.

INSERT INTO Table1 (PK_Column1) VALUES (\'Name\'+Id)

Result:

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  • 2021-01-24 07:57

    From the documentation:

    After an INSERT, SELECT INTO, or bulk copy statement completes, @@IDENTITY contains the last identity value generated by the statement.

    This applies to all the other identity checkers.

    You should probably write a little SP to update the record immediately after your insert if this is what you need. Given that your primary_key appears to be some unusual composite of the ID and a varchar, you would also be best reviewing your data model.

    It's important to note the difference with @@IDENTITY and SCOPE_IDENTITY():

    @@IDENTITY and SCOPE_IDENTITY return the last identity value generated in any table in the current session. However, SCOPE_IDENTITY returns the value only within the current scope; @@IDENTITY is not limited to a specific scope.

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