Re: how to speed ilike

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: <julius(at)nsoft(dot)lt>,<pgsql-admin(at)postgresql(dot)org>
Subject: Re: how to speed ilike
Date: 2010-01-25 13:18:43
Message-ID: 4B5D45D3020000250002EB4A@gw.wicourts.gov
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-admin

Julius Tuskenis wrote:

> I've made a function that converts lithuanian letters to latin and
> use it like fnk_latin(username) ILIKE fnk_latin('kestas').

> Now the problem is performance.

> Maybe some special index would help?

create index tblname_username_latin on tblname
((fnk_latin(username)));

You might want to have that function force all letters to lowercase.
It might also help to specify varchar_pattern_ops.

-Kevin

Responses

Browse pgsql-admin by date

  From Date Subject
Next Message Kevin Grittner 2010-01-25 13:24:54 Re: max_fsm_pages question
Previous Message Julius Tuskenis 2010-01-25 12:23:09 how to speed ilike