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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Plea for Query Tuning Help
Norman,
if you use the "view" several times in the query, CBO can decide to
materialize it, without the hint.
rgds
On 9/13/06, Norman Dunbar <norman.dunbar_at_environment-agency.gov.uk> wrote:
>
>
> Morning all,
>
> >> It is more than cosmetic as it can be referenced multiple times and
> the
> >> query is only run once and materialized, then processed as a table
> in the
> >> main query
>
> Correct me if I'm wrong, but I'm sure it is only materiali[sz]ed if you
> use the materialize hint ? Jonathan has a post somewhere on this list on
> this very subject (I think !).
>
>
> Cheers,
> Norman.
>
> Norman Dunbar.
> Contract Oracle DBA.
> Rivers House, Leeds.
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-- http://www.freelists.org/webpage/oracle-lReceived on Wed Sep 13 2006 - 02:45:09 CDT
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