Hiroyuki Sato <hiroysato@xxxxxxxxx> wrote: > Hello. > > I would like to create the query like the following. > It work well, but extreme slow. > Is it possible to improve this query like the command ``grep -f keyword data``? > > What kind of Index should I create on url_lists table? can you show us the create table and create index - statements? And, the explain analyse of your query? And, finally, the pg-version? You got an index-scan, seems okay for me. Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknown) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889° -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general