From issues-return-141533-archive-asf-public=cust-asf.ponee.io@hive.apache.org Wed Oct 31 22:05:04 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 0EEB718077A for ; Wed, 31 Oct 2018 22:05:03 +0100 (CET) Received: (qmail 70070 invoked by uid 500); 31 Oct 2018 21:05:02 -0000 Mailing-List: contact issues-help@hive.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hive.apache.org Delivered-To: mailing list issues@hive.apache.org Received: (qmail 69860 invoked by uid 99); 31 Oct 2018 21:05:02 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 31 Oct 2018 21:05:02 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id D42BED009E for ; Wed, 31 Oct 2018 21:05:01 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.301 X-Spam-Level: X-Spam-Status: No, score=-110.301 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id oVfWqfoI0FFZ for ; Wed, 31 Oct 2018 21:05:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 271615F4FF for ; Wed, 31 Oct 2018 21:05:01 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id AC84DE1328 for ; Wed, 31 Oct 2018 21:05:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 1CFBB27765 for ; Wed, 31 Oct 2018 21:05:00 +0000 (UTC) Date: Wed, 31 Oct 2018 21:05:00 +0000 (UTC) From: "Zoltan Haindrich (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Assigned] (HIVE-20850) Add rule to extract case conditional from projections MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HIVE-20850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Zoltan Haindrich reassigned HIVE-20850: --------------------------------------- > Add rule to extract case conditional from projections > ----------------------------------------------------- > > Key: HIVE-20850 > URL: https://issues.apache.org/jira/browse/HIVE-20850 > Project: Hive > Issue Type: Improvement > Reporter: Zoltan Haindrich > Assignee: Zoltan Haindrich > Priority: Major > > noticed by [~gopalv]: If there is a project which could be only evaluated after the join; but the condition references only a single column from a small dimension table; hive will end up evaluating the same thing over and over again... > {code} > explain > select s_store_name, s_store_id, > sum(case when (d_day_name='Sunday') then ss_sales_price else null end) sun_sales, > sum(case when (d_day_name='Monday') then ss_sales_price else null end) mon_sales, > sum(case when (d_day_name='Tuesday') then ss_sales_price else null end) tue_sales, > sum(case when (d_day_name='Wednesday') then ss_sales_price else null end) wed_sales, > sum(case when (d_day_name='Thursday') then ss_sales_price else null end) thu_sales, > sum(case when (d_day_name='Friday') then ss_sales_price else null end) fri_sales, > sum(case when (d_day_name='Saturday') then ss_sales_price else null end) sat_sales > from date_dim, store_sales, store > where d_date_sk = ss_sold_date_sk and > s_store_sk = ss_store_sk and > s_gmt_offset = -6 and > d_year = 1998 > group by s_store_name, s_store_id > order by s_store_name, s_store_id,sun_sales,mon_sales,tue_sales,wed_sales,thu_sales,fri_sales,sat_sales > limit 100; > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)