SQL Server unique constraint problem

Posted by b0x0rz on Stack Overflow See other posts from Stack Overflow or by b0x0rz
Published on 2010-05-07T20:56:12Z Indexed on 2010/05/07 21:28 UTC
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How to create a unique constraint on a varchar(max) field in visual studio, visually.

the problem is when i try it:

manage indexes and keys > add > columns

I can only chose the bigint columns, but not any of the varchar(max) ones.

Do I maybe have to use check constraints?

If yes, what to put in the expression?

Thnx for the info

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