Re: About TSearch2 Performance

From: Dennis Gearon <gearond(at)fireserve(dot)net>
To: Teodor Sigaev <teodor(at)sigaev(dot)ru>
Cc: Diogo Biazus <diogo(at)ikono(dot)com(dot)br>, pgsql-general(at)postgresql(dot)org
Subject: Re: About TSearch2 Performance
Date: 2003-10-24 14:18:35
Message-ID: 3F9934BB.5070404@fireserve.net
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Teodor Sigaev wrote:

> First one will be a bit faster
>
> Diogo Biazus wrote:
>
>> Hi,
>>
>> Is there any performance diference between the following SQL commands:
>>
>> SELECT * FROM documents WHERE content_ix @@
>> to_tsquery('word1&word2|word3');
>>
>> SELECT * FROM documents WHERE content_ix @@ to_tsquery('word1') AND
>> content_ix @@ to_tsquery('word2') OR content_ix @@ to_tsquery('word3');
>>
>> I'm having to do this on some complex querys to put LIKEs between
>> some ts_querys.
>> Does anyone has such experience?
>>
>> Thanks in advance,
>>
>
What do those @@ do for the statement?

--
"You are behaving like a man",
is an insult from some women,
a compliment from an good woman.

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