On Thu, 2006-11-09 at 18:49 +0100, Martijn van Oosterhout wrote:
> Nice idea, just one question:
> It seems to me that bitmap index scans will get these same
> characteristics also, right? The bitmap scan will have to follow the
> chain of any possibly matching tuple in any of the blocks that are in
> the bitmap, right?
Yes, they would identify the root tuples. The whole chain has matching
index values, by definition, so the re-evaluation for lossy bitmaps will
work just the same before the actual tuple is retrieved by walking the
chain (if required).
-- Simon Riggs EnterpriseDB http://www.enterprisedb.com
