Article View: borland.public.cppbuilder.database.ado
Article #373Re: invalid field size TADOQuery
From: siraj
Date: Thu, 21 Sep 2006 13:57
Date: Thu, 21 Sep 2006 13:57
59 lines
3022 bytes
3022 bytes
It is happening at the line where the query is opened. ReportConcADOQuery->Open(); The "invalid field size" error is occuring randomly on the same command. Some times it does not give an error at all The sql command is SELECT Avg(IIf(((Conc)*1.000000)<((0.020000)*1.000000),(0.020000)*1.000000,((Conc)* 1.000000))) as AvgConc,Channel FROM archives WHERE ((ts>= 38952.000000 AND ts<= 38962.000000) AND Transit<>1 AND DisplayFlag=true AND conc is NOT NULL) GROUP BY Channel; Regards, Siraj "Bob Swart" <b.swart@chello.nl> a οΏ½crit dans le message de news:45128B9C.6030609@chello.nl... > Hi siraj, > > > sprintf(cmd,"SELECT > > Avg(IIf(((Conc)*%lf)<((%lf)*%lf),(%lf)*%lf,((Conc)*%lf))) as AvgConc,Channel > > FROM archives WHERE ((ts>= %lf AND ts<= %lf) AND Transit<>1 AND > > DisplayFlag=true AND conc is NOT NULL ) GROUP BY > > channe1",dMultiplicationFactor,dMinimumValue,dMultiplicationFactor,dMinimumV > > alue,dMultiplicationFactor,dMultiplicationFactor,ss,ee); > > I guess it would help to show the result of this "cmd" after the sprintf > command (I don't have the mental capacity right now to produce it in my > head right now). > > > ReportConcADOQuery->Close(); > > ReportConcADOQuery->SQL->Clear(); > > ReportConcADOQuery->SQL->Add(cmd); > > ReportConcADOQuery->Open(); > > > > I am getting the error "EDatabaseError" "Invalid field size". > > You could set breakpoints to find out there the error is happening. I > have a feeling it's simple happening at the Open() command, because > something is wrong inside the "cmd" itself... > > Please just post an example of the cmd you're using here. Perhaps one of > the field values is empty (or NULL) in some cases? > > > Siraj > > Groetjes, > Bob Swart > > -- > Bob Swart Training & Consultancy (eBob42.com) Forever Loyal to Delphi > Blog: http://www.drbob42.com/blog - RSS: http://drbob42.com/weblog.xml > New Delphi 2006 Courseware e-books at http://www.eBob42.com/courseware
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X-Google-Thread: 10698b,383859d72830abc4 X-Google-Attributes: gid10698b,public X-Google-Language: ENGLISH,ASCII Reply-To: "siraj" <siraj.sm@omnisens.ch> From: "siraj" <siraj.sm@omnisens.ch> Newsgroups: borland.public.cppbuilder.database.ado References: <4512829e$1@newsgroups.borland.com> <45128B9C.6030609@chello.nl> Subject: Re: invalid field size TADOQuery Date: Thu, 21 Sep 2006 15:57:51 +0200 Lines: 61 Organization: omnisens X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1807 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1807 X-Antivirus: avast! (VPS 0638-0, 19/09/2006), Outbound message X-Antivirus-Status: Clean NNTP-Posting-Host: 212.109.69.36 Message-ID: <45129a65@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1158847077 212.109.69.36 (21 Sep 2006 06:57:57 -0700) Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!news.germany.com!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail