On postgres 7.2.3 I have found what follows: explain select * from documents where iddoc>1;
Seq Scan on lotti (cost=0.00..831.79 rows=26783 width=98) EXPLAIN explain select * from documents where iddoc=1; Index Scan using lotti_pkey on lotti (cost=0.00..2.26 rows=1 width=98) Why index is not used for operators > and < ???? Alex ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html