Changing the PK - I

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Changing the PK - I

Steve Jones - SSC Editor

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November 8, 2023 at 12:00 am

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Comments posted to this topic are about the item Changing the PK - I

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edwardwill SSCertifiable Points: 5791 More actions · Answer 1

I don't agree with this. I ran the code in my sandbox and it returned

Msg 2749, Level 16, State 3, Line 6
Identity column 'InvoiceID' must be of data type int, bigint, smallint, tinyint, or decimal or numeric with a scale of 0, unencrypted, and constrained to be nonnullable.

This, to me, doesn't betoken being unable to remove the identity property, more that you can't change the data type, although none of the options really matches.

Steve Jones - SSC Editor SSC Guru Points: 734459 More actions · Answer 2

You'd be wrong. You can change the data type of an identity property column to one of the types in the error. What you cannot do is remove the identity property, so you can't change the data type to an incompatible data type.

edwardwill SSCertifiable Points: 5791 More actions · Answer 3

Ah thank you Steve. Every day is a school day, particularly for me - my lesson here is to read the actual error message!

This reply was modified 5 months, 2 weeks ago by edwardwill.

Jeff Moden SSC Guru Points: 1003867 More actions · Answer 4

Great question, Steve. It gave me an idea for something else that I need to do.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

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