Return-Path: 
 <derby-dev-return-67044-apmail-db-derby-dev-archive=db.apache.org@db.apache.org>
Delivered-To: apmail-db-derby-dev-archive@www.apache.org
Received: (qmail 84689 invoked from network); 20 Mar 2009 18:31:13 -0000
Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2)
  by minotaur.apache.org with SMTP; 20 Mar 2009 18:31:13 -0000
Received: (qmail 67401 invoked by uid 500); 20 Mar 2009 18:31:12 -0000
Delivered-To: apmail-db-derby-dev-archive@db.apache.org
Received: (qmail 67375 invoked by uid 500); 20 Mar 2009 18:31:12 -0000
Mailing-List: contact derby-dev-help@db.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:derby-dev-help@db.apache.org>
List-Unsubscribe: <mailto:derby-dev-unsubscribe@db.apache.org>
List-Post: <mailto:derby-dev@db.apache.org>
List-Id: <derby-dev.db.apache.org>
Reply-To: <derby-dev@db.apache.org>
Delivered-To: mailing list derby-dev@db.apache.org
Received: (qmail 67350 invoked by uid 99); 20 Mar 2009 18:31:12 -0000
Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136)
    by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 20 Mar 2009 11:31:12 -0700
X-ASF-Spam-Status: No, hits=-2000.0 required=10.0
	tests=ALL_TRUSTED
X-Spam-Check-By: apache.org
Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140)
    by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 20 Mar 2009 18:31:11 +0000
Received: from brutus (localhost [127.0.0.1])
	by brutus.apache.org (Postfix) with ESMTP id EACCE234C003
	for <derby-dev@db.apache.org>; Fri, 20 Mar 2009 11:30:50 -0700 (PDT)
Message-ID: <64194265.1237573850957.JavaMail.jira@brutus>
Date: Fri, 20 Mar 2009 11:30:50 -0700 (PDT)
From: "Myrna van Lunteren (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-4079) Add support for SQL:2008 <result
 offset clause> and <fetch first clause> to limit result set cardinality
In-Reply-To: <336682448.1236050096298.JavaMail.jira@brutus>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394
X-Virus-Checked: Checked by ClamAV on apache.org


    [ https://issues.apache.org/jira/browse/DERBY-4079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683979#action_12683979 ] 

Myrna van Lunteren commented on DERBY-4079:
-------------------------------------------

that last patch still needs to get backported to 10.5 docs branch, right? 

> Add support for SQL:2008 <result offset clause> and <fetch first clause> to limit result set cardinality
> --------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4079
>                 URL: https://issues.apache.org/jira/browse/DERBY-4079
>             Project: Derby
>          Issue Type: New Feature
>          Components: SQL
>            Reporter: Dag H. Wanvik
>            Assignee: Dag H. Wanvik
>             Fix For: 10.5.0.0
>
>         Attachments: derby-4079-1.diff, derby-4079-1.stat, derby-4079-2.diff, derby-4079-2.stat, derby-4079-3.diff, derby-4079-3.stat, derby-4079-docs-1.diff, derby-4079-docs-1.stat, derby-4079-docs-1.zip, DERBY-4079-docs-2.diff, derby-4079-docs-2.diff, derby-4079-docs-2.stat, derby-4079-docs-2.zip, derby-4079-fixRtStatsTest.diff, derby-4079-fixRtStatsTest.stat, ref.zip, rrefsqljoffsetfetch.html
>
>
> SQL 2008 has added new syntax to support a direct way to limit the
> returned set of rows in a result set.  This allows an application to
> retrieve only some rows of an otherwise larger result set, similar to
> the popular LIMIT clauses use in some databases.
> Up till now, in Derby (and SQL) we have had to use the ROW_NUMBER()
> function in a nested subquery to achieve the effect of the <fetch
> first clause>, cf. DERBY-2998, a method which is rather more indirect
> and still not efficient (DERBY-3505), and primarily intended for OLAP
> functionality, perhaps.
> There has been no direct way to achieve the effect of the <result
> offset clause> via SQL.
> Syntax (cf. SQL 2008, section 7.13):
>        <result offset clause> ::= OFFSET <n> {ROW | ROWS}
>        <fetch first clause> ::=      FETCH {FIRST | NEXT} [<n>] {ROW | ROWS} ONLY
> where <n> is an integer. The two clauses syntactically follow the ORDER BY
> clause in the grammar.
> Note that both ORDER BY and the new clauses above are allowed also in
> subqueries in the new version of the SQL standard (section 7.13). I
> only propose to include this at the top level in DERBY for now. (ORDER
> BY is presently also not allowed in subqueries in Derby since SQL
> didn't allow for this until SQL 2008 either).

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.