From: Andy <frum@ar-sd.net>
To: pgsql-performance@postgresql.org
Subject: LIKE search and performance
Date: Wed, 23 May 2007 18:08:49 +0300
Message-ID: <009501c79d4c$445428f0$0b00a8c0@mpsro.dom> (raw)
Hi,
I have a table with varchar and text columns, and I have to search through
these text in the whole table.
An example would be:
SELECT * FROM table
WHERE name like '%john%' or street like '%srt%'
Anyway, the query planner always does seq scan on the whole table and that
takes some time. How can this be optimized or made in another way to be
faster?
I tried to make indexes on the columns but no success.
PG 8.2
Regards,
Andy.
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To: pgsql-performance@postgresql.org
Cc: frum@ar-sd.net
Subject: Re: LIKE search and performance
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