Leonardo F wrote: > I'm trying to find more docs that explain the "improvements" of > bitmap indexes in other products... but most of what I've found > talks about bitmapAND/OR.... which is something that is very > cool, but that postgres already does even with btree indexes... > or index creation time/size, which are, for the moment, the only > things that I'm pretty confident the patch would actually provide.
I think a real limitation of on-disk bitmap indexes is that they are only feable for low cardinality columns, while btree handles all column types. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + None of us is going to be here forever. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
