Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sziqC-007eFM-SZ for pgsql-general@arkaria.postgresql.org; Sat, 12 Oct 2024 20:35:56 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1sziqB-009yUt-6r for pgsql-general@arkaria.postgresql.org; Sat, 12 Oct 2024 20:35:55 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sziqA-009yUl-SD for pgsql-general@lists.postgresql.org; Sat, 12 Oct 2024 20:35:55 +0000 Received: from sss.pgh.pa.us ([68.162.161.243]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sziq7-000j7D-RD for pgsql-general@lists.postgresql.org; Sat, 12 Oct 2024 20:35:54 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 49CKZoAk3331814; Sat, 12 Oct 2024 16:35:50 -0400 From: Tom Lane To: Koen De Groote cc: PostgreSQL General Subject: Re: Using FDW to connect to a more recent postgres version? In-reply-to: References: Comments: In-reply-to Koen De Groote message dated "Sat, 12 Oct 2024 22:33:16 +0200" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <3331812.1728765350.1@sss.pgh.pa.us> Date: Sat, 12 Oct 2024 16:35:50 -0400 Message-ID: <3331813.1728765350@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Koen De Groote writes: > The documentation speaks only of compatibility in terms of connecting to > older version: >> postgres_fdw can be used with remote servers dating back to PostgreSQL >> 8.3. Read-only capability is available back to 8.1. > But what about connecting to a foreign server that is more recent? Like > pg14 connecting to pg17? I'd expect it to work, but it's not a scenario that we test. regards, tom lane