From: Marc McIntyre <mmcintyre@squiz.net>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-performance@postgresql.org
Subject: Re: LIKE query problem
Date: Tue, 19 Sep 2006 13:16:48 +1000
Message-ID: <450F6120.6010208@squiz.net> (raw)
In-Reply-To: <26900.1158634219@sss.pgh.pa.us>
References: <450F303A.6090603@squiz.net>
<26900.1158634219@sss.pgh.pa.us>
Thanks Tom,
Is that documented somewhere? I can't seem to see any mention of it in
the docs.
Tom Lane wrote:
> Marc McIntyre <mmcintyre@squiz.net> writes:
>
>> ... Is there a way to perform this efficiently in one query ?
>>
>
> No, because you're hoping for an indexscan optimization of a LIKE
> query, and that can only happen if the pattern is a plan-time constant.
>
> regards, tom lane
>
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To: pgsql-performance@postgresql.org
Cc: mmcintyre@squiz.net, tgl@sss.pgh.pa.us
Subject: Re: LIKE query problem
In-Reply-To: <450F6120.6010208@squiz.net>
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