I need to auto_increment a field in MySQL that is not primary key

Posted by behrk2 on Stack Overflow See other posts from Stack Overflow or by behrk2
Published on 2009-07-20T00:44:13Z Indexed on 2010/05/21 6:10 UTC
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mysql

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primary-key

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auto-increment

Hey everyone,

Right now, I have a table whose primary key is an auto_increment field. However, I need to set the primary key as username, date (to ensure that there cannot be a duplicate username with a date).

I need the auto_increment field, however, in order to make changes to row information (adding and deleting).

What is normally done with this situation?

Thanks!

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