Return-Path: 
 <issues-return-23414-apmail-drill-issues-archive=drill.apache.org@drill.apache.org>
X-Original-To: apmail-drill-issues-archive@minotaur.apache.org
Delivered-To: apmail-drill-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 E74A7177CD
	for <apmail-drill-issues-archive@minotaur.apache.org>;
 Tue, 15 Sep 2015 19:21:45 +0000 (UTC)
Received: (qmail 67100 invoked by uid 500); 15 Sep 2015 19:21:45 -0000
Delivered-To: apmail-drill-issues-archive@drill.apache.org
Received: (qmail 67069 invoked by uid 500); 15 Sep 2015 19:21:45 -0000
Mailing-List: contact issues-help@drill.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:issues-help@drill.apache.org>
List-Unsubscribe: <mailto:issues-unsubscribe@drill.apache.org>
List-Post: <mailto:issues@drill.apache.org>
List-Id: <issues.drill.apache.org>
Reply-To: dev@drill.apache.org
Delivered-To: mailing list issues@drill.apache.org
Received: (qmail 67059 invoked by uid 99); 15 Sep 2015 19:21:45 -0000
Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28)
    by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 15 Sep 2015 19:21:45 +0000
Date: Tue, 15 Sep 2015 19:21:45 +0000 (UTC)
From: "Khurram Faraaz (JIRA)" <jira@apache.org>
To: issues@drill.apache.org
Message-ID: <JIRA.12849024.1437775533000.345280.1442344905686@Atlassian.JIRA>
In-Reply-To: <JIRA.12849024.1437775533000@Atlassian.JIRA>
References: <JIRA.12849024.1437775533000@Atlassian.JIRA>
 <JIRA.12849024.1437775533467@arcas>
Subject: [jira] [Closed] (DRILL-3553) add support for LEAD and LAG window
 functions
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/DRILL-3553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Khurram Faraaz closed DRILL-3553.
---------------------------------

Verified on master b525692e

> add support for LEAD and LAG window functions
> ---------------------------------------------
>
>                 Key: DRILL-3553
>                 URL: https://issues.apache.org/jira/browse/DRILL-3553
>             Project: Apache Drill
>          Issue Type: Sub-task
>          Components: Execution - Relational Operators
>            Reporter: Deneche A. Hakim
>            Assignee: Deneche A. Hakim
>              Labels: window_function
>             Fix For: 1.2.0
>
>
> From SQL standard here is the general format of LEAD and LAG:
> {noformat}
> <window function> ::=
>   <lead or lag function> OVER <window name or specification>
> {noformat}
> {noformat}
> <lead or lag function> ::=
>   <lead or lag> ( <lead or lag extent>
>   [ , <offset> [ , <default expression> ] ] )
>   [ <null treatment> ]
> {noformat}
> {noformat}
> <lead or lag> ::=
>   LEAD | LAG
> {noformat}
> {noformat}
> <lead or lag extent> ::=
>   <value expression>
> {noformat}
> {noformat}
> <offset> ::=
>   <exact numeric literal>
> {noformat}
> {noformat}
> <default expression> ::=
>   <value expression>
> {noformat}
> The following won't be supported until CALCITE-337 is resolved:
> {noformat}
> <null treatment> ::=
>   RESPECT NULLS | IGNORE NULLS
> {noformat}
> As part of this JIRA task only the following syntax will be supported:
> {noformat}
> <lead or lag function> ::=
>   <lead or lag> ( <lead or lag extent> )
> {noformat}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)