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 ) id 1mdVh6-00033b-Gb for pgsql-general@arkaria.postgresql.org; Thu, 21 Oct 2021 10:53:08 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1mdVh5-0002qd-FE for pgsql-general@arkaria.postgresql.org; Thu, 21 Oct 2021 10:53:07 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mdVh5-0002qT-3I for pgsql-general@lists.postgresql.org; Thu, 21 Oct 2021 10:53:07 +0000 Received: from lana.depesz.com ([88.198.49.178] helo=depesz.com) by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mdVh2-0005NT-3t for pgsql-general@lists.postgresql.org; Thu, 21 Oct 2021 10:53:06 +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=lDOaPmrj2gw5d4rfBGx0yWhtuDFrFrq7ZHgY7rnVRcg=; b=B9pGrliZpRbBXn+L854KsmKCIs nMtWXOJLVUHq+RniMgTtsuTfdvOymRl1O1QZieDfd+X22Aq2exgll6UZEZxsWWcTN3XeSA2WFokbS uhADb+Yr7Y9loLOPx1/4yTMxr+qj6qx3x34SQCNrG98az6aKdtFSR48YvcUFn+r9hRJw=; Received: from lana.depesz.com ([88.198.49.178] helo=depesz.com) by depesz.com with esmtpa (Exim 4.92) (envelope-from ) id 1mdVgr-0004d8-Nj; Thu, 21 Oct 2021 12:52:53 +0200 Date: Thu, 21 Oct 2021 12:52:53 +0200 From: hubert depesz lubaczewski Sender: depesz@depesz.com To: Tom Lane Cc: Stephen Frost , Laurenz Albe , pgsql-general Subject: Re: Can we get rid of repeated queries from pg_dump? Message-ID: <20211021105253.GA20301@depesz.com> Reply-To: depesz@depesz.com References: <649446.1629987629@sss.pgh.pa.us> <20210826160644.GA3120@depesz.com> <896732.1630099403@sss.pgh.pa.us> <20210830074442.GB15241@depesz.com> <1349119.1630332682@sss.pgh.pa.us> <20210830144551.GA27054@depesz.com> <1351364.1630335487@sss.pgh.pa.us> <1414363.1630341759@sss.pgh.pa.us> <2276059.1634766361@sss.pgh.pa.us> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <2276059.1634766361@sss.pgh.pa.us> User-Agent: Mutt/1.10.1 (2018-07-13) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Wed, Oct 20, 2021 at 05:46:01PM -0400, Tom Lane wrote: > I wrote: > > Anyway, it doesn't look like there's much hope of improving this > > aspect without a significant rewrite. > > Just to close out this thread: I've now posted such a rewrite at > https://www.postgresql.org/message-id/2273648.1634764485%40sss.pgh.pa.us That looks amazing. Thanks a lot. Best regards, depesz