Oracle-L: Tricky SQL Question

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Thu, 06 Mar 2003 08:49:09 -0800
Message-ID: <F001.005621CB.20030306084909@fatcity.com>

Hi all,

I have a tricky situation ... I have a table

columns are
owner varchar2(),
name varchar2(),
ana_tm number

ana_tm represents how much time it took to perform statistics collection for owner.name value. the number ranges from 0 to about 12000 right now, and is subject to change. and say sum(ana_tm) over the table is say X.

What I'd like to have is split this data into say N groups (Let's say 8), so that each group ends up having a sum(ana_tm) ~ X/N (i.e. X/8 in this example).

What I need is a way in SQL to splice the table list in eight groups so that when I run a parallel 8 stream analyze, they all roughly take same amount of time. I tried width_bucket() and it doesn't give me things that I need. It assumes a linear distribution, which I do not have.

Is this possible to do in SQL only?

Thanks in advance, yes, you can go crazy with syntax, it is 9202. Raj

Rajendra dot Jamadagni at espn dot com
Any views expressed here are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !!

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Author: Jamadagni, Rajendra
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Received on Thu Mar 06 2003 - 10:49:09 CST