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Home -> Community -> Usenet -> c.d.o.server -> Re: io rate - join
hopehope_123 wrote:
> Hi Sybrand ,
>
> Thanks for your mail. You are right that this is a strange question .
> I am asking this question just to know how fast two tables can be
> joined. As you say , for every individual row of the driving table ,
> the nondriving table need to be looked up , but i want to know how fast
> this can be done .( Or can it be done by using better io rate) ( I
> dont mean hash join or nested loop join , i am checking the os part .)
Try putting both tables in a keep pool, then try your join a couple of times.
If one is really huge and you will be reading a substantial portion of it, a recycle pool might help.
Then you can worry about LIO's.
jg
-- @home.com is bogus. "I think there's a difference between ditzy and dumb. Dumb is just not knowing. Ditzy is having the courage to ask!" - Jessica SimpsonReceived on Tue Jul 12 2005 - 16:04:31 CDT
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