What about
SELECT id FROM table WHERE ok=1 AND type=1 and field like '%text'.
MySQL would have chance to create a temp table, reduce its contents via
ok=1 AND type=1 and then do the expensive like '%text%' matches...
Just my $0.02,
Guus
> -----Original Message-----
> From: Osus [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, August 22, 2001 4:17 PM
> To: [EMAIL PROTECTED]
> Subject: Re: slow querys
>
>
> Hi,
>
> The slow queries are those like...
>
> SELECT id FROM table WHERE field like '%text%' AND ok=1 AND type=1
>
> where table have about 20.000 records and field is a text field.
> I need to find ALL the records that have "text", even if
> text is "a" i have
> to find all the records that have one "a".
>
> Many of that querys take 16 or 20 seconds.
>
> what do you think?
>
>
>
> ----- Original Message -----
> From: "Jeremy Zawodny" <[EMAIL PROTECTED]>
> To: "Jesus" <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Wednesday, August 22, 2001 12:08 AM
> Subject: Re: slow querys
>
>
> > On Tue, Aug 21, 2001 at 10:04:58PM +0200, Jesus wrote:
> > > Threads: 12 Questions: 107446 Slow queries: 485
> Opens: 88 Flush
> tables: 1
> > > Open tables: 82 Queries per second avg: 42.722
> > > --------------
> > >
> > > Why have I so many slow querys???
> > > I can't understand, but the performance get down.
> > >
> > > I have Mysql/apache/php
> > > it's a web aplication
> > >
> > > what can i do?
> >
> > Enable the slow_query_log as described in the manual. Use the
> > information there to determine which queries are slow.
> >
> > 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 4 days, processed 56,743,183 queries
> (142/sec. avg)
> >
> >
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