On 2/15/07, Tom Lane <tgl@xxxxxxxxxxxxx> wrote:
I think that the answer is probably "because the index is lossy for this operator, so it has to be checked even if the bitmap didn't become lossy". You'd have to check the GIST opclass definition to be sure.
Any idea on what I have to look for (if it's of any interest for anyone, otherwise, I can live with your answer)? Thanks. -- Guillaume