Updatable column - index column consideration
- From: Antony Raj <ca_raj@xxxxxxxxx>
- To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 10 Feb 2012 13:09:20 -0800 (PST)
Hi,
I have a huge table say 50 million rows.It has a status_flag column and it's
values are 'H' and 'C'.
Everyday,a job inserts ~85000 rows into this table with a status_flag='P' and
at the end of proceesing the batch job,the status_flag is gettin updated from
'P' to 'C' and the previous day's rows(identified by jobid) are updated from
'C' to 'H'.
Since this column status_flag is getting updated and volatile in nature,is it
recommended not to index this column??
There are few other SELECT statements using status_flag as one their predicates.
Thanks
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