From: Peter Brawley
Date: September 26 2005 5:50pm
Subject: Re: add a column if not exists
List-Archive: http://lists.mysql.com/mysql/189569
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Claire,

 >I want to check if a column exists in a table before I
 >do an alter table to add it. How do I do this in
 >mysql? Thanks.

If you are using MySQL 5.0, query information_schema.columns 
(http://dev.mysql.com/doc/mysql/en/columns-table.html) for the table and 
column. Otherwise use SHOW COLUMNS FROM tablename.

PB
http://www.artfulsoftware.com

-----

Claire Lee wrote:

>I want to check if a column exists in a table before I
>do an alter table to add it. How do I do this in
>mysql? Thanks.
>
>Claire
>
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