From: Josh Berkus <josh@agliodbs.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-performance@postgresql.org
Subject: Re: Constraint exclusion can't process simple constant expressions?
Date: Wed, 20 Apr 2011 18:58:56 -0700
Message-ID: <4DAF8F60.9050407@agliodbs.com> (raw)
In-Reply-To: <26139.1303346929@sss.pgh.pa.us>
References: <4DAF70FD.7000609@agliodbs.com>
<26139.1303346929@sss.pgh.pa.us>
Tom,
> timestamptz + interval is not immutable --- in fact, the particular
> example you give (ts + '1 day') is certainly dependent on timezone
> setting.
Why not? Given that the time zone will be the same for both the
timestamptz and the interval, how would the result not be immutable?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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To: pgsql-performance@postgresql.org
Cc: josh@agliodbs.com, tgl@sss.pgh.pa.us
Subject: Re: Constraint exclusion can't process simple constant expressions?
In-Reply-To: <4DAF8F60.9050407@agliodbs.com>
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