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
