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 4.96) (envelope-from ) id 1vn9YP-002zg4-1K for pgsql-admin@arkaria.postgresql.org; Tue, 03 Feb 2026 06:06:25 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vn9YN-003Juj-2e for pgsql-admin@arkaria.postgresql.org; Tue, 03 Feb 2026 06:06:23 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vn9YN-003Jub-1Q for pgsql-admin@lists.postgresql.org; Tue, 03 Feb 2026 06:06:23 +0000 Received: from mail-wm1-x329.google.com ([2a00:1450:4864:20::329]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.98.2) (envelope-from ) id 1vn9YL-00000000J0y-0lrb for pgsql-admin@lists.postgresql.org; Tue, 03 Feb 2026 06:06:22 +0000 Received: by mail-wm1-x329.google.com with SMTP id 5b1f17b1804b1-4806f80cac9so26730285e9.1 for ; Mon, 02 Feb 2026 22:06:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cybertec.at; s=google; t=1770098779; x=1770703579; darn=lists.postgresql.org; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:to:from:subject:message-id:from:to:cc:subject:date :message-id:reply-to; bh=YokGjmxfdz3XE8rhNInVP8WkwLtNedkh0DkVHLpp1V8=; b=bW4sUF7zYs5vt9Ru3e1G+CM/qyYHUDBRr3UrHcF+rh/2JslmjRJAOIQdQpww9aChyD JH0E2LAFtxXByzHrmmyVZ84VXZfyE4oHT1aZe47e9spuoZL/O3sDYpSk8M/aEo2BZoIW eaBUqY7U+76nrVdOQWJTYGQC7VNySgYsaVejD1nNakK47zS/Xy6JCxAGcxPwieklaXih cCueiyQrP5r/gv7bYlI/JG/N2tm4WxCkH/0spA2pp4Z2D3Jt2J/Bwux6NB0tJhP8mGTB Lou4/uEx1XY4gwtHu9WeyNbFZ0k84jeVOzDrRLR6RhDmAlmF5tH3bypDY4JyhDgAN8nn o3vw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770098779; x=1770703579; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:to:from:subject:message-id:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=YokGjmxfdz3XE8rhNInVP8WkwLtNedkh0DkVHLpp1V8=; b=MWEKpTV80lSeL4gyaM19G5OpUjyRzetNGRZ7Cj9W5JdI41vEtzoZatZ1ET2wN175NK 32oSDlJaWqoTnk1h4SMD9DHHBU3JZ9MVF6+qqUFCqOG9/NoVnZ/JXhmBHSNzhhjwlwLI Vwt62EcE8RZnXEvrB0ytwvEMX/oLejOtkMe89JLSipgTEYqEBebIyCEks6HsWgr2XmSN l714ZqkkSIhOPTC9Jke3y+T/oSgQ9aQ1Fb3hZ3bsZnwGxqL5yFA7Ail3Dt/dKvBS/BRS kLOGqIrsfLwU3agEdBqF5SMeuykEvwZIGMKUa/lPUbiBAhRdDdN9iWoLFRVGr4LZmxIb oQJQ== X-Forwarded-Encrypted: i=1; AJvYcCWwwIZEsURwtKYHCBhS9MYdyo/hdGWogFshWfUHhDLbnchHhhX/Vp3ccFDF+ByS1BtVWsAKPJzhYFn4ng==@lists.postgresql.org X-Gm-Message-State: AOJu0YzCy1OJ7xYenAVXQFnKfW8+tZEgGsfBsHe4bzGU9usL8WWeFCqb oX1xRPtZ3o4za5O3ULhdIin0Ovjwwat+ei6vb1pGPasbYZu2xbAHpjvQ3+TYcKw0N2gBbqlZoN6 tSH5T X-Gm-Gg: AZuq6aLWH2tpVfR8zaSK6AlZehKEtWLaMohIDynJzNzDWHELEj7PB9AoR6z+5u34IgB tkxdM4B+QNpxHPvKpWoMfFmEEDtLLe31/4Nd3ox9qVaeal15NEf9tU4JV6UsTGjIfOEVdQUbmjS um2ff36daikbI4ioB3xuXSamLFJbiIqlsj2LpH3quZ00CreNEhe41uLVia4OZPpwfO2ZgHgh2CG UePkdKtOGDhyNIOfAJkHHYsRBU6cPe013OBGVTskLHW2CkMrFX3Z7tjlLW3TErakgIYc8OsgWXy dZ9lCAw0OzuSHycWpowzbDBERHItvQjNQYtbDgjIMejdTeadaGyuH4lYsN+slD4QKcYRd0o7eBW mSPm2ZwAkAi24UjW82pxEMLnATTfxqv9bw+b9fPAkLnvoUaHRUzQVlT2HiwOFaknW9Oh9O20Ibx AV4nzOCutBZFVdUPyqsv+9ELoSq6W/yliejPd4q3/D3KTA6UjePBb4 X-Received: by 2002:a05:600c:1549:b0:471:114e:5894 with SMTP id 5b1f17b1804b1-482db4e3054mr183952815e9.25.1770098779617; Mon, 02 Feb 2026 22:06:19 -0800 (PST) Received: from laurenz.albe-K4N0CV00F97414D ([2001:871:260:83f9:a029:9851:8fa8:208b]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4830513352csm38273895e9.10.2026.02.02.22.06.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Feb 2026 22:06:19 -0800 (PST) Message-ID: Subject: Re: Does pg_dump custom format only compress the table data? From: Laurenz Albe To: Ron Johnson , Pgsql-admin Date: Tue, 03 Feb 2026 07:06:18 +0100 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.2 (3.58.2-1.fc43) MIME-Version: 1.0 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Mon, 2026-02-02 at 10:55 -0500, Ron Johnson wrote: > Out of curiosity, I opened that dump file in vim, and saw not only DDL st= rings but cleartext table data. >=20 > Why isn't it compressed? Are your DDL statement large enough that you would expect that compressing them would offer any real advantage? Yours, Laurenz Albe