We are plainning to use the attached result for estimating cost of
scanning thick indexes.
Regards,
Amit
Persistent Systems
www.persistentsys.com
On 1/22/09, Amit Gupta <amit.pc.gupta@gmail.com> wrote:
> Hi,
>
> We are extending Gokul's Thick index functionality
> (http://archives.postgresql.org/pgsql-patches/2008-01/msg00092.php)
> on 8.4 code base to
> - fix existing defects
> - Extend thick index usage for group by, count, nested queries, and
> "delete/update with join" queries.
> - Improve cost estimates for using thick indexes, and
> - Support OR condition queries using thick indexes (which involves
> computation of bitmap-or)
>
> Details of the above features can be seen at
> http://aurora.regenstrief.org/postgresql/report/6
>
> Please let me know if you have any comments or suggestions.
>
> Thanks,
> Amit
> Persistent Systems
>
>
