Article View: borland.public.interbase.sql
Article #11375Re: Selecting row in which a column value is maximum
From: Craig Stuntz TeamB
Date: Mon, 25 Nov 2002 15:55
Date: Mon, 25 Nov 2002 15:55
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1614 bytes
In article <3de0d0f0$1@newsgroups.borland.com>, "Arno Brinkman" <bnewsgroups @ abvisie.nl> says... > SELECT > * > FROM > ATable > WHERE > ATable.AField = (SELECT MAX(AField) FROM ATable) > > I'm afraid that the above query will be slow, so it's faster to use an SP. > Shouldn't be a problem if there's a DESCENDING INDEX on ATable.AField. -Craig -- Craig Stuntz [TeamB] � Vertex Systems Corp. � Columbus, OH Delphi/InterBase Weblog : http://delphi.weblogs.com InterBase Perf. Monitor : http://delphi.weblogs.com/IBPerformanceMonitor InterBase PLANalyzer 1.1: http://delphi.weblogs.com/IBPLANalyzer
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 114a0e,60a1aedc82f6444 X-Google-Attributes: gid114a0e,public X-Google-ArrivalTime: 2002-11-25 08:06:27 PST From: Craig Stuntz [TeamB] <cstuntz@nospamplease.com (but use vertexsoftware to email)> Newsgroups: borland.public.interbase.sql Subject: Re: Selecting row in which a column value is maximum Date: Mon, 25 Nov 2002 10:55:34 -0500 Message-ID: <MPG.184c120210a6b55a98a253@newsgroups.borland.com> References: <3de051cf@newsgroups.borland.com> <3de0d0f0$1@newsgroups.borland.com> Organization: Vertex Systems Corporation X-Newsreader: MicroPlanet Gravity v2.60 NNTP-Posting-Host: 65.86.87.242 X-Trace: newsgroups.borland.com 1038239641 65.86.87.242 (25 Nov 2002 07:54:01 -0800) Lines: 21 Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-05!sn-xit-03!sn-xit-01!sn-xit-04!supernews.com!news.maxwell.syr.edu!nntp-relay.ihug.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail