Hi all! First thanks to any answer by now :-) > You don't post your table definitions (please do), but it looks like > test_b, test_c, test_d and test_e might be bigints? If so, you may > want to do explicit "AND test_b=1::bigint AND test_c=2::bigint" etc. > -- 7.4 doesn't figure this out for you. (8.0 and higher does.) I didn't post table defintion, but you all are right, test_a to test_e are all bigint. I use JDBC to connect to this database and use a prepared statment for the queries and set all parameters with pst.setLong() method. Perhaps this could be the problem? I'll try 'normal' statements with typecasting, because as far as I can see, the query is the problem (postgresql takes more than 98% cpu while running these statements) or the overhead produced (but not the network, as it has only 1-2% load). Quering other tables (not as big - both rows and columns are much less) run quite fast with the same code. So, thanks again - I'll try and report :-) Can't be so slow, I have some self-build database with millions of rows and they run very fast - but they don't use bigint ;-) Cheers, Jan ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster