On Fri, 1 Oct 2004, Kris Kiger wrote: > Hey all, its me again. If I do not do a count(product_id) on my > tsearch2 queries, its actually really fast, for example; >
Hmm, I also really want to know what's the difference ? Postgresql 8.0beta3 on Linux 2.4.25 tsearchd=# explain analyze select body from txt where fts_index @@ to_tsquery('oil') limit 1000; QUERY PLAN -------------------------------------------------------------------------------------------------------------------------------- Limit (cost=0.00..4027.67 rows=1000 width=315) (actual time=0.053..14.662 rows=1000 loops=1) -> Index Scan using fts_idx on txt (cost=0.00..12083.02 rows=3000 width=315) (actual time=0.049..12.552 rows=1000 loops=1) Index Cond: (fts_index @@ '\'oil\''::tsquery) Total runtime: 15.848 ms (4 rows) tsearchd=# explain analyze select count(body) from txt where fts_index @@ to_tsquery('oil') limit 1000; Didn't get result after 10 minutes :( Regards, Oleg _____________________________________________________________ Oleg Bartunov, sci.researcher, hostmaster of AstroNet, Sternberg Astronomical Institute, Moscow University (Russia) Internet: [EMAIL PROTECTED], http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83 ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])