Received: from malur.postgresql.org ([2a02:16a8:dc51::56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1fV0dM-0007VR-RZ for pgsql-hackers@arkaria.postgresql.org; Mon, 18 Jun 2018 20:20:17 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1fV0dK-0003QP-Ta for pgsql-hackers@arkaria.postgresql.org; Mon, 18 Jun 2018 20:20:14 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1fV0dK-0003Pq-D7 for pgsql-hackers@lists.postgresql.org; Mon, 18 Jun 2018 20:20:14 +0000 Received: from mail-yw0-x241.google.com ([2607:f8b0:4002:c05::241]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1fV0dG-0003QT-UL for pgsql-hackers@postgresql.org; Mon, 18 Jun 2018 20:20:12 +0000 Received: by mail-yw0-x241.google.com with SMTP id v190-v6so6091710ywa.12 for ; Mon, 18 Jun 2018 13:20:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=2ndquadrant-com.20150623.gappssmtp.com; s=20150623; h=from:subject:to:references:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=lGoHxS5OHNbHC6Kr0QZjurF3eNP4SWrfOJPX4ZurroY=; b=PwbmCrOExcWXKrxkx7VUbQnxYz8NZzZM4TOdRr+QXjawl/nPXN+NtML/KO6M55y3iU mEDxshgTalzCy1yN2lM0pF46a+wY2ZAp5B7HjhIDGWjzdz5ne12h3MMBxtj9N+u6o7i4 oGpHiAzyJrqHRfRaj4638h1PERcgF31pjVZQ8gb3dRzhXom5s/RtrUTRz7bzfqTBLHzM 0NsWG8GIVF/oUT/V9G5Ej6zhwc2eaHwHQD6g2ApjdUrz32TJJ2efq3gG2rQqvieTZMIG KsUEZ5Xa/spLh6kZsgZZ4Ne0CPTOofi6YupQmmzZNssSmlLY+ZW5pwoR9j3extWITCSH Do5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:to:references:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=lGoHxS5OHNbHC6Kr0QZjurF3eNP4SWrfOJPX4ZurroY=; b=PuAPCuQJULtiFoWPPGzo1+mAnz6V+MBQMVwbyRkek+qnNCtNDi4YW8YXC/NeFxXcL6 RiqRjOyZGUbR5XoKsF/3AyIbERZfmAElLR3cpJveWd7XqzjiedNSqk+s+sSOLyMCt8wV Z4hRlj6sgJGoHL67f5SKemZ/bRYyGeDDLZDI4O0H28gbrNweruNeY8xfhCiNB4haBmBI JOhyhGagLj9SXx9vDtu4r7kPWZdIWsMBTl1YUihCm/q7FoZN/cZ+SjbCsgtnxipNn/va TdI0tCNpJhwSZJfIjgpQ+QaOQvEWjlp58CVphkeEWo7VB+INqx1a3tdR08dvRKwUPf5g b/dg== X-Gm-Message-State: APt69E0OwTPkbUqxfRvEV7WxhcfrG7LkB5r2YNy+jj9y5dzA9IiA2dXL UpAO2fL5FJoFcrpTrraLbZnEFmcyEE6rUN5VaQ+c6qx7ykDppzZydbV7smlbZ64dp47y0GRGdyY f+LXEUmuUOMmFJJtTTu8OKPZCjv595v7xXSEU2Gwu2vf8sxAOJa2tQwYVaKidyL+9DMr8SR27G1 GzYIngMESx79yN X-Google-Smtp-Source: ADUXVKJbmOd4IXL37Cn8VdTqtL3tA7FygjifykRhWPMM5DxddTDJEhUNH6TSrKH+L+M9F+4PbPdqdg== X-Received: by 2002:a81:af0f:: with SMTP id n15-v6mr6972724ywh.207.1529353209506; Mon, 18 Jun 2018 13:20:09 -0700 (PDT) Received: from [192.168.10.146] ([98.122.175.38]) by smtp.gmail.com with ESMTPSA id y71-v6sm6611226ywy.4.2018.06.18.13.20.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Jun 2018 13:20:08 -0700 (PDT) From: Andrew Dunstan X-Google-Original-From: Andrew Dunstan Subject: Re: Index Skip Scan To: jesper.pedersen@redhat.com, pgsql-hackers@postgresql.org References: <707b6f68-16fa-7aa7-96e5-eeb4865e6a30@redhat.com> Message-ID: <0ce42349-b022-107d-88d7-e12e732c4b2c@2ndQuadrant.com> Date: Mon, 18 Jun 2018 16:20:07 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <707b6f68-16fa-7aa7-96e5-eeb4865e6a30@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-MW List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 06/18/2018 11:25 AM, Jesper Pedersen wrote: > Hi all, > > I would like to start a discussion on Index Skip Scan referred to as > Loose Index Scan in the wiki [1]. awesome > > > > I wasn't planning on making this a patch submission for the July > CommitFest due to the reasons mentioned above, but can do so if people > thinks it is best. T New large features are not appropriate for the July CF. September should be your goal. cheers andrew -- Andrew Dunstan https://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services