Oracle-L: Re: Finding out last 10 records

From: Alexandre Gorbatchev <alexandre.gorbatchev_at_avermann.de>
Date: Wed, 14 Aug 2002 03:08:23 -0800
Message-ID: <F001.004B40C0.20020814030823@fatcity.com>

Santosh,

There is no "last" and "first" records in relational databases in terms of location. All records are equal and may be stored physically anywhere. I guess that may be possible (parsing ROWID and using information about extent location) to sort records by extent, block and number of record inside block, but that's not a trivial task. If you need to select last 10 inserted records, make a trigger with filling a timestamp into a column and select with sort by this column using rownum in where condition.

Alexandre

Original Message ----- From: Santosh Varma To: Multiple recipients of list ORACLE-L Sent: Wednesday, August 14, 2002 11:48 AM Subject: Finding out last 10 records

Hello all

Could any one of you guide me on how to select last 10 records from a table. and also finding out first 10 records..

Thanks and regards,

Santosh

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Author: Alexandre Gorbatchev
INET: alexandre.gorbatchev_at_avermann.de

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