Date: Tue, 7 Aug 2018 13:57:42 -0400
From: Bruce Momjian <bruce@momjian.us>
To: seb55@op.pl, pgsql-docs@lists.postgresql.org
Subject: Re: RETURN NULL in the sample of insert trigger on partitioned table
Message-ID: <20180807175742.GG7297@momjian.us>
References: <153130169932.1401.6073393592184007233@wrigleys.postgresql.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <153130169932.1401.6073393592184007233@wrigleys.postgresql.org>
User-Agent: Mutt/1.5.23 (2014-03-12)
Precedence: bulk

On Wed, Jul 11, 2018 at 09:34:59AM +0000, PG Doc comments form wrote:
> The following documentation comment has been logged on the website:
> 
> Page: https://www.postgresql.org/docs/9.6/static/ddl-partitioning.html
> Description:
> 
> Why in provided samples of "insert" triggers on partitioned table at the end
> of the triggers you provide "return NULL" not "return NEW"?
> 
> This causes, among other things, problems with the GET DIAGNOSTICS clause
> var = ROW_COUNT clause.

Uh, you mean measurement_insert_trigger?  Returning NEW would cause the
row to be inserted into the referenced table.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +