Hi,
Try this...
Do an alter and create indexes on the following fields of your tables:
-wmkt_email_sent.fkemail
-wmkt_client.fkemail
-wmkt_maillist_client.fkclient
... and i think it's a good idea if you create indexes on the primary keys
of each table.It's redundant but have some effect.
Regards,
Gelu
_
G.NET SOFTWARE COMPANY
Permanent e-mail address : [EMAIL PROTECTED]
[EMAIL PROTECTED]
- Original Message -
From: Edilson Vasconcelos de Melo Junior [EMAIL PROTECTED]
To: MYSQL [EMAIL PROTECTED]
Sent: Tuesday, May 14, 2002 8:31 PM
Subject: Query slow (again)
Hi,
I have changed my query but it is so slow :( Please, help me!
Thank u very much!
Edilson.
-
Query -
SELECT a.idemail, a.fklastresp
FROM wmkt_email a, wmkt_client b, wmkt_maillist_client c
LEFT JOIN wmkt_email_sent d ON a.idemail=d.fkemail
WHERE d.fkemail IS NULL
AND c.bActive AND c.fkmaillist IN (2)
AND a.idemail=b.fkemail AND c.fkclient=b.idclient
ORDER BY fklastresp LIMIT 1000
-
Tables structures -
Table,Create Table
wmkt_email,CREATE TABLE `wmkt_email` (
`idemail` int(11) NOT NULL auto_increment,
`email` varchar(255) NOT NULL default '',
`fklastresp` int(11) NOT NULL default '0',
PRIMARY KEY (`idemail`),
UNIQUE KEY `ixEmail` (`email`)
) TYPE=MyISAM
Table,Create Table
wmkt_client,CREATE TABLE `wmkt_client` (
`idclient` int(11) NOT NULL auto_increment,
`realname` varchar(80) NOT NULL default '',
`fkemail` int(11) NOT NULL default '0',
`dtInsert` datetime default NULL,
`dtLastUp` datetime default NULL,
`fkuser` int(11) NOT NULL default '1',
PRIMARY KEY (`idclient`),
KEY `ixFkemail` (`fkemail`)
) TYPE=MyISAM
-
Table,Create Table
wmkt_maillist_client,CREATE TABLE `wmkt_maillist_client` (
`fkmaillist` int(11) NOT NULL default '0',
`fkclient` int(11) NOT NULL default '0',
`dtInsert` datetime default NULL,
`bActive` tinyint(4) NOT NULL default '1',
KEY `ixEmailList` (`fkmaillist`,`fkclient`)
) TYPE=MyISAM
-
Table,Create Table
wmkt_email_sent,CREATE TABLE `wmkt_email_sent` (
`idemailsent` int(11) NOT NULL auto_increment,
`fkpbl` int(11) NOT NULL default '0',
`fkemail` int(11) NOT NULL default '0',
`dtSend` datetime default NULL,
`nResult` int(11) NOT NULL default '0',
`dtLastUp` datetime default NULL,
`nMachine` int(11) NOT NULL default '0',
PRIMARY KEY (`idemailsent`),
UNIQUE KEY `ixUEmailPbl` (`fkemail`,`fkpbl`),
KEY `ixnMacPbl` (`nMachine`,`fkpbl`,`fkemail`)
) TYPE=MyISAM
-
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