Article View: borland.public.interbase.sql
Article #264Re: Extreamly cpu intensive query
From: Mikael
Date: Tue, 29 Jan 2008 14:48
Date: Tue, 29 Jan 2008 14:48
19 lines
1544 bytes
1544 bytes
> Check the fetch statistics. The subqueries are correlated. Hence, lots > of fetching, lots of sorting. I always thougt this conserned I/O not Cpu. But sorting in memory maybe does? > > Use GROUP BY / HAVING instead, if possible, a stored proc if not. Hmm intresting. can you please develop that? > > -- > Craig Stuntz [TeamB] � Vertex Systems Corp. � Columbus, OH > Delphi/InterBase Weblog : http://blogs.teamb.com/craigstuntz > Want to help make Delphi and InterBase better? Use QC! > http://qc.borland.com -- Vote for important issues
Technical Details
Message-ID:
<479f3cda$1@newsgroups.borland.com>Path:
arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!news.glorb.com!newsgate.cistron.nl!xs4all!news2.euro.net!newsfeed.freenet.de!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mailReferences:
<479f1acb@newsgroups.borland.com> <479f37d1@newsgroups.borland.com>Show Full Headers
Complete Article Headers
X-Google-Thread: 114a0e,5debdf074bd6e927 X-Google-Attributes: gid114a0e,public,usenet X-Google-Language: ENGLISH,ASCII From: "Mikael" <mikael.nilsson@put.com> Newsgroups: borland.public.interbase.sql References: <479f1acb@newsgroups.borland.com> <479f37d1@newsgroups.borland.com> Subject: Re: Extreamly cpu intensive query Date: Tue, 29 Jan 2008 15:48:58 +0100 Lines: 21 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3138 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 NNTP-Posting-Host: 217.150.160.139 Message-ID: <479f3cda$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1201618138 217.150.160.139 (29 Jan 2008 06:48:58 -0700) Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!news.glorb.com!newsgate.cistron.nl!xs4all!news2.euro.net!newsfeed.freenet.de!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail