Article View: borland.public.cppbuilder.database.ado
Article #4888Re: When to set Prepared = true
From: Matt Jacobs
Date: Sat, 25 Aug 2001 00:01
Date: Sat, 25 Aug 2001 00:01
33 lines
1730 bytes
1730 bytes
Thanks Mark. My main question is if I don't prepare it, can the SQL
still use parameters?
I guess my problem is I would like to avoid the round-trip to the
server for queries that are executed only once, with or without
parameters. If I have to create the parameters myself, that's fine.
But can I still use parameters, and will the VCL create them for me,
if the query is not prepared?
i.e.
TADOQuery *q= new TADOQuery(0);
q->Connection = TheConnection;
q->Close();
q->SQL->Clear();
q->SQL->Add("SELECT * FROM LAB_ORDER_DTLS WHERE LO_ID = :LO_ID");
q->Parameters->ParamByName("LO_ID")->Value = 10;
q->Open();
Or do I need to place a "q->Prepared = true" just before
ParamByName()?
Thanks again!
Matt
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10698b,2c35ed6da94cb5e6 X-Google-Attributes: gid10698b,public X-Google-ArrivalTime: 2001-08-25 02:46:26 PST From: mattja@ix.netcom.com (Matt Jacobs) Newsgroups: borland.public.cppbuilder.database.ado Subject: Re: When to set Prepared = true Date: Sat, 25 Aug 2001 00:01:51 GMT Reply-To: __mattja@ix.netcom.com Message-ID: <3b86e957.10717668@forums.inprise.com> References: <3b85f5e5.1283054@forums.inprise.com> <3B863647.F5E35CC4@temporaldoorway.com> X-Newsreader: Forte Free Agent 1.21/32.243 NNTP-Posting-Host: 24.9.166.132 X-Trace: dnews 998697648 24.9.166.132 (24 Aug 2001 17:00:48 -0700) Lines: 33 Path: arc1-ca.pugleaf.net!archiver1.google.com!newsfeed.google.com!sn-xit-02!supernews.com!newsfeed.direct.ca!look.ca!howland.erols.net!newsfeed.wirehub.nl!PeerFeed.KWeb.on.ca!dnews