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Re: PL/pgSQL EXECUTE '..' USING with unknown

Cédric Villemain <cedric.villemain.debian@gmail.com>

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From: Cédric Villemain <cedric.villemain.debian@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2010-08-17T16:44:00Z
Lists: pgsql-hackers 
2010/8/17 Tom Lane <tgl@sss.pgh.pa.us>:
> =?ISO-8859-1?Q?C=E9dric_Villemain?= <cedric.villemain.debian@gmail.com> writes:
>> 2010/8/16 Tom Lane <tgl@sss.pgh.pa.us>:
>>> =?ISO-8859-1?Q?C=E9dric_Villemain?= <cedric.villemain.debian@gmail.com> writes:
>>>> Unfortunely the current implementation of EXECUTE USING is not working
>>>> this way.
>>>
>>> Uh ... what do you base that statement on?
>
>> About the planning behavior ?
>> With USING, I get a seqscan (cost and long), without USING I have an
>> indexscan(short and costless).
>
> It works as expected for me.  What PG version are you using exactly?
> Could you provide a self-contained example?

postgresql 8.4.4. Yes I'll work one out this evening.
more or less : table foo (uid char(32) PK, flag boolean), uids are
md5sum. +-6M rows.
-- 
Cédric Villemain               2ndQuadrant
http://2ndQuadrant.fr/     PostgreSQL : Expertise, Formation et Support