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Re: function side effects

From: Jaime Casanova <jcasanov(at)systemguards(dot)com(dot)ec>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, Greg Stark <gsstark(at)mit(dot)edu>, Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Tatsuo Ishii <ishii(at)postgresql(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: function side effects
Date: 2010-03-01 22:36:08
Message-ID: 3073cc9b1003011436v73a94af2ve7903d38560c02be@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Mon, Mar 1, 2010 at 4:29 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
>> SQL standard:
>
>> <SQL-data access indication> ::=
>> NO SQL
>> | CONTAINS SQL
>> | READS SQL DATA
>> | MODIFIES SQL DATA
>
> Huh.  I understand three of those, but what is the use of CONTAINS SQL?
> Seems like that would have to be the same as the last one
>

i guess the safer asumption is: treat it as MODIFIES SQL DATA

-- 
Atentamente,
Jaime Casanova
Soporte y capacitación de PostgreSQL
Asesoría y desarrollo de sistemas
Guayaquil - Ecuador
Cel. +59387171157

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