On Mon, Jan 21, 2002 at 05:18:35PM +0100, Roger Baklund wrote: > Hi, > > Also, I wonder what is the best order for my primary keys: > > a int This is the 'main' id, very many distinct values > b tinyint This is a source code, possible values are 1 or 2 > c smallint Some counter > d tinyint Another counter > > or > > b tinyint This is a source code, possible values are 1 or 2 > a int This is the 'main' id, very many distinct values > c smallint Some counter > d tinyint Another counter > > Which will perform faster, when all lookups use both a and b?
Is this helpful at all? http://www.linux-mag.com/2001-06/mysql_01.html It covers compound indexes (among other topics). Jeremy -- Jeremy D. Zawodny, <[EMAIL PROTECTED]> Technical Yahoo - Yahoo Finance Desk: (408) 349-7878 Fax: (408) 349-5454 Cell: (408) 685-5936 MySQL 3.23.41-max: up 19 days, processed 440,731,871 queries (264/sec. avg) --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
