sql - How do I enforce a two-column constraint?

Posted by hamlin11 on Stack Overflow See other posts from Stack Overflow or by hamlin11
Published on 2010-05-14T16:44:19Z Indexed on 2010/05/14 16:54 UTC
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Filed under:

sql

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sql-server-2005

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sql-server-2008

I have a CustomerID column and an EffectiveDate column in a table.

I need the combination of these two to be unique.

However, I already have a primary key on an auto-numbered integer column.

What is a good way to accomplish my goal?

Thanks

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