Re: ROWNUM strangeness?

Holes in your extents/segments. Normal. You get this after repeated updates/deletes/inserts.

ltiu

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
>
>
>
>
>
>__________________________________________________
>Do You Yahoo!?
>Yahoo! Finance - Get real-time stock quotes
>http://finance.yahoo.com
>
>

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Author: ltiu
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