Scott Ribe <scott_ribe@xxxxxxxxxxxxxxx> writes: >> Huh? If I'm understanding you correctly you'll end up with rows in >> order, but with a really big hole in the middle of the table. I'm not >> sure if that qualifies as "clusters". > That's why he said vacuum when done. Huh? A plain vacuum wouldn't fix that; a vacuum full would close up the hole, but (a) it'd not preserve the row ordering, and (b) it'd take an exclusive lock. regards, tom lane