"this slowdown can be enforced by slow client (or slow network)." As I said i made the tow test on the same machine as the server using PGAdmin no network involved. "pgAdmin is not terrible fast" I also try the same query from my application using libpq I get same results regards -- View this message in context: http://postgresql.nabble.com/Copy-command-Faster-than-original-select-tp5836886p5836893.html Sent from the PostgreSQL - performance mailing list archive at Nabble.com. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance