On Mon, 2011-11-28 at 17:42 +0100, Joost Kraaijeveld wrote: > - Is there a way to rephrase the query that makes it faster? This query goes faster (6224 ms, but I am not sure it gives the correct answer as the result differs from my Java program): select word, count (word) from unique_words where word in (select word from unique_words where word in ( select word from unique_words where filetype = 'f') and filetype = 's') and filetype = 'n' group by word -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 web: www.askesis.nl -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance