From dev-return-53065-archive-asf-public=cust-asf.ponee.io@phoenix.apache.org Tue Jul 17 03:26:03 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 35F57180657 for ; Tue, 17 Jul 2018 03:26:03 +0200 (CEST) Received: (qmail 92966 invoked by uid 500); 17 Jul 2018 01:26:02 -0000 Mailing-List: contact dev-help@phoenix.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@phoenix.apache.org Delivered-To: mailing list dev@phoenix.apache.org Received: (qmail 92955 invoked by uid 99); 17 Jul 2018 01:26:02 -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; Tue, 17 Jul 2018 01:26:02 +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 AF645C1BF6 for ; Tue, 17 Jul 2018 01:26:01 +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 CnObLj5iWuL6 for ; Tue, 17 Jul 2018 01:26:01 +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 C12F05F1F3 for ; Tue, 17 Jul 2018 01:26:00 +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 4B661E0102 for ; Tue, 17 Jul 2018 01:26:00 +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 10A2323F98 for ; Tue, 17 Jul 2018 01:26:00 +0000 (UTC) Date: Tue, 17 Jul 2018 01:26:00 +0000 (UTC) From: "Jaanai Zhang (JIRA)" To: dev@phoenix.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (PHOENIX-4815) support alter table modify column MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/PHOENIX-4815?page=3Dcom.atlass= ian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jaanai Zhang updated PHOENIX-4815: ---------------------------------- Description:=20 if we want to change max length or scale of fields of variable length typ= e( example for :varchar, char and decimal type etc), we can not drop colu= mn to recreate new column when the table has massive data, which may affec= ts online service=EF=BC=8Cmeanwhile, it is also very expensive. so sometime= s this function is very useful. Taking ORACLE dialect as an reference=20 {code:java} alter table table_name modify column_name datatype; {code} was: if we want to change max length or scale of fields of variable length typ= e( example for :varchar, char and decimal type etc), we can not drop colu= mn to recreate new column when the table has massive data, which may affec= ts online service=EF=BC=8Cmeanwhile, it is also very expensive. so sometime= s this function is very useful. Taking ORACLE dialect as reference=20 {code:java} alter table table_name modify column_name datatype; {code} > support alter table modify column=20 > ---------------------------------- > > Key: PHOENIX-4815 > URL: https://issues.apache.org/jira/browse/PHOENIX-4815 > Project: Phoenix > Issue Type: Improvement > Reporter: Jaanai Zhang > Priority: Major > > if we want to change max length or scale of fields of variable length t= ype( example for :varchar, char and decimal type etc), we can not drop co= lumn to recreate new column when the table has massive data, which may aff= ects online service=EF=BC=8Cmeanwhile, it is also very expensive. so someti= mes this function is very useful. > Taking ORACLE dialect as an reference=20 > {code:java} > alter table > table_name > modify > column_name datatype; > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)