Joost Kraaijeveld <J.Kraaijeveld@xxxxxxxxxx> wrote: > This query goes faster (6224 ms, but I am not sure it gives the > correct answer as the result differs from my Java program): It seems clear that you want to see words which appear with all three types of files, but it's not clear what you want the count to represent. The number of times the word appears in filetype 'n' references (as specified in your second query)? The number of permutations of documents which incorporate one 'f' document, one 's' document, and one 'n' document (as specified in your first query). Something else, like the total number of times the word appears? -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
