On Fri, 9 Mar 2001, Stephan Szabo wrote:
-> Hmm, what were the two queries anyway?
The "slower" query
----------------------------
SELECT to_char( p.insertion_time, 'HH:MI AM MM/DD' ) as time_in, s.name as title, a.name
asartist, s.length as length
FROM playlist p, songs s, artists a
WHERE p.waiting = TRUE AND p.song_id = s.song_id AND s.artist_id = a.artist_id
ORDER BY p.item_id
The "faster" query
----------------------------
SELECT to_char( p.insertion_time, 'HH:MI AM MM/DD' ) as time_in, s.name as title, s.length
aslength, a.name as artist
FROM playlist p JOIN songs s USING (song_id), artists a
WHERE p.waiting = TRUE AND p.song_id = s.song_id AND s.artist_id = a.artist_id
ORDER BY p.item_id;
Notice how the only difference is in the FROM clause?
-- Dave
