Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XJFuv-0005I9-UP for pgsql-interfaces@arkaria.postgresql.org; Mon, 18 Aug 2014 05:55:42 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1XJFuu-0007hq-Mm for pgsql-interfaces@arkaria.postgresql.org; Mon, 18 Aug 2014 05:55:40 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1XJFut-0007hh-NB for pgsql-interfaces@postgresql.org; Mon, 18 Aug 2014 05:55:39 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1XJFuq-0004PY-LA for pgsql-interfaces@postgresql.org; Mon, 18 Aug 2014 05:55:38 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id s7I5tZ4v027177; Mon, 18 Aug 2014 01:55:35 -0400 From: Tom Lane To: Thomas Heller cc: pgsql-interfaces@postgresql.org Subject: Re: Protocol Question In-reply-to: References: <22826.1407769579@sss.pgh.pa.us> <9844.1407881328@sss.pgh.pa.us> Comments: In-reply-to Thomas Heller message dated "Sat, 16 Aug 2014 12:01:13 +0200" Date: Mon, 18 Aug 2014 01:55:35 -0400 Message-ID: <27176.1408341335@sss.pgh.pa.us> X-Pg-Spam-Score: -2.6 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-interfaces Precedence: bulk Sender: pgsql-interfaces-owner@postgresql.org Thomas Heller writes: > I just encountered a weird protocol error while stress testing my client. > I'm receiving unexpected 'n'/NoData messages while reading 'D'/DataRow > messages. AFAICS, NoData can only be returned in response to Describe Statement or Describe Portal issued against a command that cannot return rows. If you can provide a counterexample for this claim, I'd be interested to see it. But my money is on confusion on the client side. regards, tom lane -- Sent via pgsql-interfaces mailing list (pgsql-interfaces@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-interfaces