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From: Josh Berkus <josh@agliodbs.com>
To: Philippe Lang <philippe.lang@attiksystem.ch>
To: pgsql-sql@postgresql.org
Subject: Re: Datetime conversion in WHERE clause
Date: Thu, 9 Sep 2004 11:42:41 -0700
Message-ID: <200409091142.41872.josh@agliodbs.com> (raw)
In-Reply-To: <6C0CF58A187DA5479245E0830AF84F420803F0@poweredge.attiksystem.ch>
References: <6C0CF58A187DA5479245E0830AF84F420803F0@poweredge.attiksystem.ch>

Philippe,

> Is there a way to force the date conversion to fail sliently, and simply
> return a null in case the parameter is not a valid date?

You'd need to write a custom function, using an external language that allows 
you to test for valid date values.   I prefer using PL/perlU with 
Date::Manip, but use what you like.

-- 
Josh Berkus
Aglio Database Solutions
San Francisco



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