Greg Stark <[EMAIL PROTECTED]> writes: > I wonder if the bitmap can actually be one bit per page actually.
Yeah, I think we'd agreed that per-page was the way to go. Per-tuple bitmaps are painful to manage because of the variable number of tuples per page. And really all you need to know is whether to read the page or not --- once you have, examining multiple tuples on it doesn't cost much. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend