Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps
 (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <pgsql-admin-owner+archive@lists.postgresql.org>)
	id 1jt9Z3-0000Sg-Jf
	for pgsql-admin@arkaria.postgresql.org; Wed, 08 Jul 2020 12:52:42 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.92)
	(envelope-from <pgsql-admin-owner+archive@lists.postgresql.org>)
	id 1jt9Z1-0000oq-Cz
	for pgsql-admin@arkaria.postgresql.org; Wed, 08 Jul 2020 12:52:39 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <depesz@depesz.com>)
	id 1jt9Z1-0000oj-3j
	for pgsql-admin@lists.postgresql.org; Wed, 08 Jul 2020 12:52:39 +0000
Received: from lana.depesz.com ([88.198.49.178] helo=depesz.com)
	by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <depesz@depesz.com>)
	id 1jt9Yy-0007il-J2
	for pgsql-admin@postgresql.org; Wed, 08 Jul 2020 12:52:38 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=depesz.com;
	 s=20170201; h=In-Reply-To:Content-Type:MIME-Version:References:Reply-To:
	Message-ID:Subject:Cc:To:Sender:From:Date:Content-Transfer-Encoding:
	Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:
	Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:
	List-Subscribe:List-Post:List-Owner:List-Archive;
	bh=JVsT7hrmuAmfqUq22tKKHqNbt1zXh7Jd9SqHtQvHKuE=; b=rpCoY+tWAVWOud+2DE8UrXJ/vf
	WclvUK05r6AWaUWxWxDXoEr10HDylOOJUdBJ9XxzKXNG468lYkRGYbejlTV6XR3okkHGvEFDbqHCf
	xYupaTrTBCd8+w/pj6lhPdo2guooEoDXixdqgocGU+HLnkCCEC12s7+jFQTnSy56ekbI=;
Received: from lana.depesz.com ([88.198.49.178] helo=depesz.com)
	by depesz.com with esmtpa (Exim 4.92)
	(envelope-from <depesz@depesz.com>)
	id 1jt9Yw-000740-6D; Wed, 08 Jul 2020 14:52:34 +0200
Date: Wed, 8 Jul 2020 14:52:34 +0200
From: hubert depesz lubaczewski <depesz@depesz.com>
Sender: depesz@depesz.com
To: Wells Oliver <wells.oliver@gmail.com>
Cc: pgsql-admin <pgsql-admin@postgresql.org>
Subject: Re: SELECTing from a function where i don't want the results
Message-ID: <20200708125234.GA21649@depesz.com>
Reply-To: depesz@depesz.com
References: 
 <CAOC+FBXnaxi1yiEv=mL2J1tbnsLfqoneNOnikiQFobdEv=DaWw@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: 
 <CAOC+FBXnaxi1yiEv=mL2J1tbnsLfqoneNOnikiQFobdEv=DaWw@mail.gmail.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
List-Id: <pgsql-admin.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-admin@lists.postgresql.org>
List-Owner: <mailto:pgsql-admin-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-admin>
Precedence: bulk

On Tue, Jul 07, 2020 at 03:34:31PM -0700, Wells Oliver wrote:
> Vanilla SQL script calls a plpgsql function to delete some number of rows
> from three tables:
> 
> SELECT mydelete(r) FROM sometable;

select count( mydelete(r) ) from sometable;

this will return just one row regardless of how many rows are in
sometable.

Best regards,

depesz