From oracle-l-bounce@freelists.org Tue Jun 22 12:30:04 2004 Return-Path: Received: from air189.startdedicated.com (root@localhost) by orafaq.com (8.11.6/8.11.6) with ESMTP id i5MHTmc14380 for ; Tue, 22 Jun 2004 12:29:58 -0500 X-ClientAddr: 206.53.239.180 Received: from turing.freelists.org (freelists-180.iquest.net [206.53.239.180]) by air189.startdedicated.com (8.11.6/8.11.6) with ESMTP id i5MHTc614325 for ; Tue, 22 Jun 2004 12:29:48 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 7C55D72C290; Tue, 22 Jun 2004 12:13:17 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 27052-29; Tue, 22 Jun 2004 12:13:17 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 8BF6872C5A4; Tue, 22 Jun 2004 12:13:15 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Tue, 22 Jun 2004 12:11:48 -0500 (EST) X-Original-To: oracle-l@freelists.org Delivered-To: oracle-l@freelists.org Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id CCD5772C5E4 for ; Tue, 22 Jun 2004 12:11:45 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 24217-69 for ; Tue, 22 Jun 2004 12:11:45 -0500 (EST) Received: from ha-smtp3.tiscali.nl (smtp-b2c.tiscali.nl [195.241.80.19]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 97E4F72C59C for ; Tue, 22 Jun 2004 12:11:44 -0500 (EST) Received: from LAPTOPLEX (82-168-217-228-bbxl.xdsl.tiscali.nl [82.168.217.228]) by ha-smtp3.tiscali.nl (Postfix) with SMTP id 55E2B3161F9 for ; Tue, 22 Jun 2004 19:33:09 +0200 (CEST) From: "Lex de Haan" To: Subject: RE: Slow running Query. Date: Tue, 22 Jun 2004 19:33:02 +0200 Message-ID: MIME-Version: 1.0 Content-type: text/plain X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) Importance: Normal In-Reply-To: <40D86A94.000003.02400@CACHITOSS> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: by amavisd-new at freelists.org Content-Transfer-Encoding: 8bit X-archive-position: 3334 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: lex.de.haan@naturaljoin.nl Precedence: normal Reply-To: oracle-l@freelists.org X-list: oracle-l X-Virus-Scanned: by amavisd-new at freelists.org Juan, in your case you don't even need the nvl function -- because the result is always 3. the problem occurs with the empty set. check this out: SQL> create table blah(c1 number); Table created. SQL> select nvl(sum(c1),0), sum(nvl(c1,0)) from blah; NVL(SUM(C1),0) SUM(NVL(C1,0)) -------------- -------------- 0 SQL> Kind regards, Lex. --------------------------------------------- visit my website at http://www.naturaljoin.nl --------------------------------------------- -----Original Message----- From: oracle-l-bounce@freelists.org [mailto:oracle-l-bounce@freelists.org]On Behalf Of Juan Carlos Reyes Pacheco Sent: Tuesday, June 22, 2004 18:21 To: oracle-l@freelists.org Subject: RE: Slow running Query. Hi Lex, why you say that, could you showme why please I show you why I say is the same: SQL> select * from test; TEST ---------- 1 2 Transcurrido: 00:00:00.00 SQL> select count(*) from test where test is null; COUNT(*) ---------- 1 Transcurrido: 00:00:00.00 SQL> select sum(nvl(test,0)) from test; SUM(NVL(TEST,0)) ---------------- 3 Transcurrido: 00:00:00.00 SQL> select nvl(sum(test),0) from test; NVL(SUM(TEST),0) ---------------- 3 Transcurrido: 00:00:00.00 -------Original Message------- From: oracle-l@freelists.org Date: 06/22/04 12:43:39 To: oracle-l@freelists.org Subject: RE: Slow running Query. Juan, unfortunately sum(nvl(column,0)) is not equivalent to nvl(sum(column),0).. Kind regards, Lex. --------------------------------------------- visit my website at http://www.naturaljoin.nl --------------------------------------------- -----Original Message----- From: oracle-l-bounce@freelists.org [mailto:oracle-l-bounce@freelists.org]On Behalf Of Juan Carlos Reyes Pacheco Sent: Tuesday, June 22, 2004 17:15 To: oracle-l@freelists.org Subject: RE: Slow running Query. Hi, I will do t he following Try creating function indexes on composed columns you are queryin and tellme if this improves something For example you are using as_date in the where column, but you don't have a index on substr(ca_date,1,4,.... Only to avoid unncesary plsql work 1. instead sum(nvl(column,0)) I'll use nvl(sum(column),0 2. instead of decode use case -- Binary/unsupported file stripped by Ecartis -- -- Type: text/x-vcard -- File: Lex de Haan.vcf ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- -- Binary/unsupported file stripped by Ecartis -- -- Type: text/x-vcard -- File: Lex de Haan.vcf ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------