Re: Posible planner improvement?

[Richard Huxton <dev(at)archonet(dot)com>]

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