Re: Index update = Delete + insert ?

No -
If you update a column that is involved in an index, but the update is a 'no-change' update

1. the TABLE row is locked
2. undo and redo are generated for the TABLE row but The index is not even visited, let alone locked and modified.

Regards

Jonathan Lewis
http://www.jlcomp.demon.co.uk

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The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html

-----Original Message-----
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: 12 February 2003 14:14

>Vijay,List
>
>When Updating to the Field to the SAME (Previously Existent) Data
Value , Does a DELETE & RE-Insert of the Same Row to the index happen nevertheless ?
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Jonathan Lewis
  INET: jonathan_at_jlcomp.demon.co.uk

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