[wp-hackers] How to determine install version of MySQL?

[Williams Phillip]

The conversation here awhile back regarding SQL queries brought up an  
issue that I have with a my archive filter plug-in. To filter the the  
archives I am using a query similar to the one in wp_get_archive.  
However, there is a subquery that I use to limit the posts to those  
included (or excluded) from specified categories. Since WP supports  
older versions of MySQL that do not support subqueries, the plug-in  
would not work.

Is there a hook/method that I could use to not allow the plug-in to  
be activated unless MySQL is v5 or better?

Thanks,

Phil
phil.m.williams at gmail.com