From: Tom Lane <tgl@sss.pgh.pa.us>
To: n.j.saunders@gmail.com
Cc: pgsql-sql@postgresql.org
Subject: Re: Triggers & Conditional Assignment
Date: Thu, 15 Sep 2005 09:56:01 -0400
Message-ID: <13506.1126792561@sss.pgh.pa.us> (raw)
In-Reply-To: <ddcd549e0509150225586b1d06@mail.gmail.com>
References: <ddcd549e0509150225586b1d06@mail.gmail.com>
Neil Saunders <n.j.saunders@gmail.com> writes:
> I've tried to write something along the lines of the following:
> sdate = (NEW.start_date IS NOT NULL) ? NEW.start_date : OLD.start_date;
> edate = (NEW.end_date IS NOT NULL) ? NEW.end_date : OLD.end_date;
> But conditional assignment doesn't seem to be catered for.
The equivalent construct in SQL is CASE.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, n.j.saunders@gmail.com
Subject: Re: Triggers & Conditional Assignment
In-Reply-To: <13506.1126792561@sss.pgh.pa.us>
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