Albert Cervera Areny wrote:
I've got a query similar to this:
select * from t1, t2 where t1.id > 158507 and t1.id = t2.id;
That took > 84 minutes (the query was a bit longer but this is the part that
made the difference) after a little change the query took ~1 second:
select * from t1, t2 where t1.id > 158507 and t2.id > 158507 and t1.id =
t2.id;
Try posting EXPLAIN ANALYSE SELECT ... for both of those queries and
we'll see why it's better at the second one.
--
Richard Huxton
Archonet Ltd
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
