On Feb 10, 2008 5:30 PM, Yves Goergen <[EMAIL PROTECTED]> wrote:
> My problem is that the sub-select in line 7 ("SELECT 1") takes a rather
> long time. (When I remove it, it's much faster.)This is a known issue with EXISTS/NOT EXISTS subqueries in MySQL, which has some fixes slated for MySQL 6. In the meantime, there are ways to rewrite most of these queries using JOIN/LEFT JOIN. Read some of the articles on http://xaprb.com/ about subqueries for a more detailed explanation and examples of rewrites. - Perrin -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
