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There was an effort to build bitmap indexes for Postgres a few years ago. There are details in the mailing list archives. It looks like it was almost completed!
by pjungwir 11y ago
There was an effort to build bitmap indexes for Postgres a few years ago. There are details in the mailing list archives. It looks like it was almost completed! It's high on my list of things to tackle if I ever get time to start contributing, but maybe someone else will get to it first.
- facetube 11y agoIs that different than the bitmap index access method, which IIRC landed in 8.1 or so, and is used to combine results of multiple index scans?
- pjungwir 11y agoYes, totally different thing. :-) A great book on query plan stuff is here: http://www.amazon.com/PostgreSQL-High-Performance-Gregory-Smith/dp/184951030X http://www.amazon.com/PostgreSQL-High-Performance-Gregory-Sm...