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