http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/ Stay curious! Tue, 07 Oct 2008 02:57:55 +0000 http://wordpress.org/?v=2.6.2 http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/#comment-13699 p2e.dk/noter » Blog Archive » Optimering af subselects Wed, 21 Nov 2007 21:40:44 +0000 http://www.xaprb.com/blog/?p=127#comment-13699 [...] en glimrende artikel om et lille MySQL [...] [...] en glimrende artikel om et lille MySQL [...]

]]> http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/#comment-13428 Re: bookmarks and keywords | Bla.es Mon, 01 Oct 2007 09:21:43 +0000 http://www.xaprb.com/blog/?p=127#comment-13428 [...] www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/ [...] [...] http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/ [...]

]]> http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/#comment-13426 Nolan Hurlburt Fri, 28 Sep 2007 17:36:41 +0000 http://www.xaprb.com/blog/?p=127#comment-13426 Was given a script today that took approximately 40 minutes to run. It now runs in under a minute. Thanks to this form of query optimization. Many more issues to hammer out but this was a huge one. Thanks a ton! Was given a script today that took approximately 40 minutes to run. It now runs in under a minute. Thanks to this form of query optimization. Many more issues to hammer out but this was a huge one. Thanks a ton!

]]> http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/#comment-13410 DaveO Thu, 20 Sep 2007 14:44:32 +0000 http://www.xaprb.com/blog/?p=127#comment-13410 Just found this article and your explanation has turned my 45 second query into a 0.1 second query. :) Just found this article and your explanation has turned my 45 second query into a 0.1 second query. :)

]]> http://www.xaprb.com/blog/2006/04/30/how-to-optimize-subqueries-and-joins-in-mysql/#comment-12812 Xaprb Tue, 31 Jul 2007 11:26:28 +0000 http://www.xaprb.com/blog/?p=127#comment-12812 The only storage engine that offers clustered indexes at this time is InnoDB. The primary key is automatically clustered. You cannot change which index is clustered; you cannot make a primary key without making it clustered; and if you don't create a primary key on an InnoDB table, it creates an invisible 6-byte primary key and clusters on it. The only storage engine that offers clustered indexes at this time is InnoDB. The primary key is automatically clustered. You cannot change which index is clustered; you cannot make a primary key without making it clustered; and if you don’t create a primary key on an InnoDB table, it creates an invisible 6-byte primary key and clusters on it.

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