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From: chester c young <chestercyoung@yahoo.com>
To: blay bloo <blaybloo@googlemail.com>
Cc: sql pgsql <pgsql-sql@postgresql.org>
Subject: Re: Execute SQL statements with 'context'/predefined variables
Date: Mon, 3 Sep 2007 14:59:11 -0700 (PDT)
Message-ID: <692669.75275.qm@web54306.mail.re2.yahoo.com> (raw)
In-Reply-To: <66c468170709031102j1e21d313v512c488ccc289505@mail.gmail.com>


> I was wondering if it is possible to set the 'context' for running an
> sql command

Oracle has a Context('varname') that returns the value of varname for
the session.  to best of my knowledge pg has nothing like this.

> I guess bottom line, is it possible to execute a bunch of SQL
> statements with some predefined variables?

you could use rules to inject you constants as long as you were dealing
with known tables/views; you'd have to rewrite the rules each time the
constants changed; the rules are not session oriented - each sessions
would use the same rule.

(if you have not used pg rules imho you are in for a very pleasant
surprise.)



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  Subject: Re: Execute SQL statements with 'context'/predefined variables
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