> Personally, I think the first thing we ought to do is add a real, bona
> fide planner hint to override the selectivity calculation manually,
> maybe something like this:
>
> WHERE (x < 5 AND y = 1) SELECTIVITY (0.1);
>
> Then, having provided a method for the DBA to extinguish the raging
> flames of searing agony which are consuming them while a crocodile
> chews off their leg and their boss asks them why they didn't use
> Oracle, we can continue bikeshedding about the best way of fixing this
> problem in a more user-transparent fashion.
Is there some way we can do that without adding the selectivity hint to
the query itself? That's the biggest issue with hints.
-- -- Josh Berkus PostgreSQL Experts Inc.
http://www.pgexperts.com