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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Qualifying columns to improve performance?
Hi,
you should better reuse your parsed statements
oli
Arn.Klammer_at_austrac.gov.au wrote
> > At a course some years ago, we were told that in join statements, we
should
> qualify ALL our column names with the appropriate table name, not just
> those that may be ambiguous. The reason was that the parser would not need
> to spend time checking multiple tables to determine the table to which each
> column belongs.
>
> Is this still a valid rule?
>
> Does this apply to statements in PL/SQL procedures/packages? Or are they
> different, because they are checked at compile time?
>
> -a
>
>
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-- Oliver Artelt Oracle Certified DBA cubeoffice GmbH & Co.KG # jordanstrasse 7 # 39112 magdeburg telefon: +49 (0)391 6 11 28 10 # telefax: +49 (0)391 6 11 28 19 email: info@cubeoffice.de # web: http://www.cubeoffice.de -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Oliver Artelt INET: oli_at_md.transnet.de Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Tue Apr 03 2001 - 11:25:41 CDT
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