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 1slrzM-001fGQ-VD for pgsql-hackers@arkaria.postgresql.org; Wed, 04 Sep 2024 15:32:09 +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 1slrzL-00BS9t-Hc for pgsql-hackers@arkaria.postgresql.org; Wed, 04 Sep 2024 15:32:07 +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 4.94.2) (envelope-from ) id 1slrzL-00BS9l-0E for pgsql-hackers@lists.postgresql.org; Wed, 04 Sep 2024 15:32:07 +0000 Received: from mail.postgrespro.ru ([93.174.131.139]) by makus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1slrzH-0008B4-3P for pgsql-hackers@postgresql.org; Wed, 04 Sep 2024 15:32:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=postgrespro.ru; s=mx2023; t=1725463919; bh=eKbTIGhbfq/VSfiXKL2545HKb6v140TnGzwSUPME0N0=; h=Message-ID:Date:User-Agent:Subject:To:Cc:References:From: In-Reply-To:From; b=AzAdGmpEVRA6ehCksU1EQfHKd6ou5qKyFqXDducUSY4vmSno0H0EWShhBpPT5Ug6U 5Xb6cY+yekJXzu6hqIFy4z9X/c7P+NU+LCOc/e+EG6gnPVHD22U6CIKoA9Bgg4lXVM 3HVit6jk+hguOWaN33jUiN2Xejn85AXqY1czLY4VYH8IWkvGp03ZT7BIauA9IZK9ZL bwz/xTOZ/Ouulj/9c1/2dBnUre6UdeNzNkJmzmcN6HBUCesmJ1Tu3gTffjh36iYVAG COkyk9cQkLAXhU251hlEteuBwUzFKfGq7AvowiZGyLJO13VC1zTkmROo4H9Xsa2C/S G9XKKydolNfaQ== Received: from [172.30.33.154] (unknown [172.30.33.154]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: a.rybakina@postgrespro.ru) by mail.postgrespro.ru (Postfix/587) with ESMTPSA id 2C40B60837; Wed, 4 Sep 2024 18:31:59 +0300 (MSK) Content-Type: multipart/mixed; boundary="------------38517vGYHxX1VhJ1GJzlkazG" Message-ID: <63617a30-6078-4e86-b44b-6364e04e210d@postgrespro.ru> Date: Wed, 4 Sep 2024 18:31:36 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: POC, WIP: OR-clause support for indexes To: Andrei Lepikhov Cc: Alexander Korotkov , jian he , Nikolay Shaplov , pgsql-hackers@lists.postgresql.org, Robert Haas , pgsql-hackers@postgresql.org, Peter Geoghegan , Marcos Pegoraro , teodor@sigaev.ru, Peter Eisentraut , Ranier Vilela References: <567ED6CA.2040504@sigaev.ru> <531fc0ab-371e-4235-97e3-dd2d077b6995@postgrespro.ru> <65bfdcb6-0f0c-4d4c-a721-cb38a0ba91c7@postgrespro.ru> <670d1dc2-a280-4cf6-bc29-e2eafb107081@gmail.com> <93464dd6-d484-4021-b71f-e82928bf6758@gmail.com> Content-Language: en-US From: Alena Rybakina In-Reply-To: <93464dd6-d484-4021-b71f-e82928bf6758@gmail.com> X-KSMG-AntiPhishing: NotDetected X-KSMG-AntiSpam-Interceptor-Info: not scanned X-KSMG-AntiSpam-Status: not scanned, disabled by settings X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.1.0.7854, bases: 2024/09/04 13:43:00 #26519950 X-KSMG-AntiVirus-Status: NotDetected, skipped X-KSMG-LinksScanning: not scanned, disabled by settings X-KSMG-Message-Action: skipped X-KSMG-Rule-ID: 1 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk This is a multi-part message in MIME format. --------------38517vGYHxX1VhJ1GJzlkazG Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi! On 03.09.2024 12:52, Andrei Lepikhov wrote: >> If OR constants have different types, then they belong to different >> groups, and I think that's unfair. I think that conversion to a >> single type should be used here - while I’m working on this, I’ll >> send the code in the next letter. > IMO, that means additional overhead, isn't it? It is an improvement > and I suggest to discuss it in a separate thread if current feature > will be applied. I think we will have a slight overhead, so in essence it will go additionally through the transformed groups, and not through the entire list of Or expressions. I agree with your suggestion to discuss it in separate thread. >> >> And I noticed that there were some tests missing on this, so I added >> this. >> >> I've updated the patch file to include my and Jian's suggestions, as >> well as the diff file if there's no objection. > I doubt if you really need additional index on the tenk1 table. What > is the case you can't reproduce with current indexes, playing, let's > say, with casting to numeric and integer data types? > See in attachment minor fixes to the v38 version of the patch set. > I rewrote the tests with integer types. Thanks for your suggestion. If you don't mind, I've updated the diff file you attached earlier to include the tests. --------------38517vGYHxX1VhJ1GJzlkazG Content-Type: text/plain; charset=UTF-8; name="minor-fix.no-cbot" Content-Disposition: attachment; filename="minor-fix.no-cbot" Content-Transfer-Encoding: base64 ZGlmZiAtLWdpdCBhL3NyYy9iYWNrZW5kL29wdGltaXplci9wYXRoL2luZHhwYXRoLmMgYi9z cmMvYmFja2VuZC9vcHRpbWl6ZXIvcGF0aC9pbmR4cGF0aC5jCmluZGV4IGNkZTYzNWQ5Y2I2 Li5kNTQ0NjJmMGZjZSAxMDA2NDQKLS0tIGEvc3JjL2JhY2tlbmQvb3B0aW1pemVyL3BhdGgv aW5keHBhdGguYworKysgYi9zcmMvYmFja2VuZC9vcHRpbWl6ZXIvcGF0aC9pbmR4cGF0aC5j CkBAIC0zMzQ1LDEwICszMzQ1LDggQEAgbWF0Y2hfb3JjbGF1c2VfdG9faW5kZXhjb2woUGxh bm5lckluZm8gKnJvb3QsCiAJCWdldF90eXBsZW5ieXZhbGFsaWduKGNvbnN0dHlwZSwgJnR5 cGxlbiwgJnR5cGJ5dmFsLCAmdHlwYWxpZ24pOwogCiAJCWVsZW1zID0gKERhdHVtICopIHBh bGxvYyhzaXplb2YoRGF0dW0pICogbGlzdF9sZW5ndGgoY29uc3RzKSk7Ci0JCWZvcmVhY2go bGMsIGNvbnN0cykKKwkJZm9yZWFjaF9ub2RlKENvbnN0LCB2YWx1ZSwgY29uc3RzKQogCQl7 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