I'm in the process of upgrading one of my servers from 7.3 to 8.1, and have run across a query that is slower on the new 8.1 box. FWIW The data is all freshly loaded and freshly analyzed, and this is 8.1.1 to be precise. The part that I am really curious about right now is this snippit of the explain plan:
> Sort (cost=616.64..620.56 rows=1568 width=12) (actual time=46.579..54.641 > rows=6407 loops=1) Sort Key: latest_download.host_id -> Subquery Scan latest_download (cost=498.14..533.42 rows=1568 width=12) (actual time=43.657..45.594 rows=472 loops=1) I am wondering why it would end up with a different number of rows after the sort operation. If you want to see the full explain analyze, it's at http://rafb.net/paste/results/D8lq9v79.html, these are lines 29-31. TIA Robert Treat -- Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster