Return-Path: X-Original-To: apmail-hive-issues-archive@minotaur.apache.org Delivered-To: apmail-hive-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 5D53617537 for ; Sun, 31 May 2015 05:41:17 +0000 (UTC) Received: (qmail 32429 invoked by uid 500); 31 May 2015 05:41:17 -0000 Delivered-To: apmail-hive-issues-archive@hive.apache.org Received: (qmail 32408 invoked by uid 500); 31 May 2015 05:41:17 -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 32396 invoked by uid 99); 31 May 2015 05:41:17 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 31 May 2015 05:41:17 +0000 Date: Sun, 31 May 2015 05:41:17 +0000 (UTC) From: "Alexander Pivovarov (JIRA)" To: issues@hive.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-686) add UDF substring_index 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-686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566375#comment-14566375 ] Alexander Pivovarov commented on HIVE-686: ------------------------------------------ Added the function description to the Language Manual https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-StringFunctions > add UDF substring_index > ----------------------- > > Key: HIVE-686 > URL: https://issues.apache.org/jira/browse/HIVE-686 > Project: Hive > Issue Type: New Feature > Components: UDF > Reporter: Namit Jain > Assignee: Alexander Pivovarov > Fix For: 1.3.0 > > Attachments: HIVE-686.1.patch, HIVE-686.1.patch, HIVE-686.patch, HIVE-686.patch > > > SUBSTRING_INDEX(str,delim,count) > Returns the substring from string str before count occurrences of the delimiter delim. If count is positive, everything to the left of the final delimiter (counting from the left) is returned. If count is negative, everything to the right of the final delimiter (counting from the right) is returned. SUBSTRING_INDEX() performs a case-sensitive match when searching for delim. > Examples: > {code} > SELECT SUBSTRING_INDEX('www.mysql.com', '.', 3); > --www.mysql.com > SELECT SUBSTRING_INDEX('www.mysql.com', '.', 2); > --www.mysql > SELECT SUBSTRING_INDEX('www.mysql.com', '.', 1); > --www > SELECT SUBSTRING_INDEX('www.mysql.com', '.', 0); > --'' > SELECT SUBSTRING_INDEX('www.mysql.com', '.', -1); > --com > SELECT SUBSTRING_INDEX('www.mysql.com', '.', -2); > --mysql.com > SELECT SUBSTRING_INDEX('www.mysql.com', '.', -3); > --www.mysql.com > {code} > {code} > --#delim does not exist in str > SELECT SUBSTRING_INDEX('www.mysql.com', 'Q', 1); > --www.mysql.com > --#delim is 2 chars > SELECT SUBSTRING_INDEX('www||mysql||com', '||', 2); > --www||mysql > --#delim is empty string > SELECT SUBSTRING_INDEX('www.mysql.com', '', 2); > --'' > --#str is empty string > SELECT SUBSTRING_INDEX('', '.', 2); > --'' > {code} > {code} > --#null params > SELECT SUBSTRING_INDEX(null, '.', 1); > --null > SELECT SUBSTRING_INDEX('www.mysql.com', null, 1); > --null > SELECT SUBSTRING_INDEX('www.mysql.com', '.', null); > --null > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)