Re: Detecting changes to certain fields in 'before update' trigger functions

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Sebastian Tennant <sebyte(at)smolny(dot)plus(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Detecting changes to certain fields in 'before update' trigger functions
Date: 2008-12-01 17:24:56
Message-ID: 23157.1228152296@sss.pgh.pa.us
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Sebastian Tennant <sebyte(at)smolny(dot)plus(dot)com> writes:
> I sometimes think this kind of gotcha is purposely buried, or not
> addressed at all, in order to force users to read the manual.

Where exactly do you think we should document it, if not in the manual?
In any case it's SQL-standard behavior that any book about SQL will
tell you.

regards, tom lane

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