On Wed, Apr 12, 2006 at 05:32:32PM -0700, Sriram Dandapani wrote:
> Hi
>
> When I update a table that has 20 columns and the where clause includes
> 16 of the columns (this is a data warehousing type update on aggregate
> fields),
>
> The bitmap scan is not used by the optimizer. The table is indexed on 3
> of the 20 fields. The update takes really long to finish (on a 6 million
> row table)
>
> Do I need to do some "magic" with configuration to turn on bitmap scans.
No. What's explain analyze of the query show? What's it doing now?
Seqscan? You might try set enable_seqscan=off and see what that does.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461