> Right now, if an index entry points to a dead tuple, we set a bit in
> the index so future lookups do not access the heap. We could set a bit
> for block index entries that point to a page that has no live rows, and
> have vacuum remove the index entry later.
GIN don't support this feature...
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/