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Editorial Team
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Asked: 2026-06-15T17:47:23+00:00

I have a database that I migrated from MySql using SQL Server Migration Assistant

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I have a database that I migrated from MySql using SQL Server Migration Assistant and it is now stored in Azure.

SSMA apparently generated a new primary key column, named ssma$rowid, for one of the tables. I am trying to change the PK back to Card_Key, but I am getting the following error:

An error was encountered while applying the changes.
An exception occurred while executing the Transact-SQL statement:
ALTER TABLE [carddb].[Cards] ALTER COLUMN [Card_Key] INT NOT NULL.
The index ‘Card_Key’ is dependent on column ‘Card_Key’.
ALTER TABLE ALTER COLUMN Card_Key failed because one or more objects
access this column.

How can I make Card_Key the PK again?

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1 Answer

  1. Editorial Team

    The easiest might be to create a new table [cards2] with the correct primary key and copy your data from [cards] into the new table (just run a INSERT INTO cards2 … SELECT … FROM cards). Once that’s done, you can drop (or rename to [cardsold] be on the safe side) the original table [cards], and rename the new table as [cards]: sp_rename cards2, cards

    This should work.

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