----- Original Message ----- From: "David Phillips" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, February 04, 2002 4:01 PM Subject: Re: How to index Optimization on 20 million record
> > PRIMARY KEY (`FIELD_1`), > > KEY `FIELD_1` (`FIELD_1`), > > You don't need a second key on the column, as it is a duplicate of the > primary key. of cource FIELD_2 also primary key, sorry i miss information CREATE TABLE `TABLE_1`( `FIELD_1` varchar(64) NOT NULL default '', `FIELD_2` varchar(16) NOT NULL default '', `FIELD_3` varchar(150) default NULL '', PRIMARY KEY (`FIELD_1`,'`FIELD_2`), KEY `FIELD_1` (`FIELD_1`), ) TYPE=MyISAM PACK_KEYS=1 but, why still long time to got the result from this query : select count(*) from TABLE_1 where FIELD_1 = "XXX_CC"; any error from my structure database or whatever thank's Hery Yulianto --------------------------------------------------------------------- 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
