Re: Composite Index Order VS Query Order ?? , Tuning Docs URL ?.

From: Paul Baumgartel <treegarden_at_yahoo.com>
Date: Tue, 13 Jul 2004 09:35:10 -0700 (PDT)
Message-ID: <20040713163510.85576.qmail@web13423.mail.yahoo.com>

Comments in-line.

• "Ranjeesh K R." <ranjeeshk_at_infics.com> wrote:
  > Hi,
  > I was working on optimising a piece of code which was taking 10hrs +
  > to execute and all.So my queries are..
  >
  > #1) Saw a table where the "order of query" on the table and the
  > "order of key"
  > are different . For faster results shouldn't they be in the same
  > order.
  >
  > for eg:
  >
  > Select ... where A.ID = ... and A.Name = ...
  >
  > The Key order on this table A NOW is Name & ID Order .
  > Shouldn't they be in the order ID , Name ?..
  

That doesn't matter as long as both key columns are mentioned in the query. The optimizer will use the index in the most efficient way.

>
>
> #2) Can anybody recommend me any site , where I will get reliable
> information on Tuning PL/SQL ?.

Try www.searchoracle.com - Ask The Experts.

>
>
> With thanks in advance
>
> Ranjeesh
>
>
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Received on Tue Jul 13 2004 - 11:32:11 CDT