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Re: ROWNUM strangeness?

From: Stephane Faroult <sfaroult_at_oriole.com>
Date: Thu, 29 Aug 2002 10:18:37 -0800
Message-ID: <F001.004C2DBC.20020829101837@fatcity.com>


Paul Baumgartel wrote:
>
> I've been given a query to investigate. The performance varies
> extremely depending on whether the entire result set is fetched or a
> ROWNUM < n clause is attached; that makes sense to me. What doesn't
> make sense is the following: if we add WHERE ROWNUM < 50, the query
> returns 24 rows. If we add WHERE ROWNUM < 1000, the query returns 336
> rows!
>
> I don't know the size of the entire result set (I'm running a count
> right now), but if the result set consists of at least 336 rows,
> shouldn't WHERE ROWNUM < 50 return 49 rows?
>
> TIA!
>
> =====
> Paul Baumgartel, Adept Computer Associates, Inc.
> paul.baumgartel_at_aya.yale.edu
>

Wow! a nice case ! Could you please post the query ?

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Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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Received on Thu Aug 29 2002 - 13:18:37 CDT

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