>>Hi,
>>
>>What would be the TSQL syntax to check if a column is set to be an Indenity column (Is Identity = Yes)? And if No, how to do set the column in Identity Yes in code?
>>
>>TIA
>
>Sys.columns has IsIdentity bit column, e.g.
>
>if exists (SELECT name, is_identity
>FROM sys.columns
>WHERE [object_id] = object_id('items')
>and is_identity = 1)
>
>print 'Table Items has identity column'
>
>(If you know the column name, just check it using a similar script).
>
>If you want to make the column to be identity, you need to re-create the table (e.g. if you don't want to preserve current values, you can do
>
>select identity (int,1,1) as NewIdentityColumn, col1, col2, ...
>into myNewTable
>from myTable
I found an article by Pinal Dave where he shows a way to change the column into an Identity. Not very simple; requires creating temp table, etc. So I will do it in SSMS since I don't need to do it often.
http://blog.sqlauthority.com/2009/05/03/sql-server-add-or-remove-identity-property-on-column/
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