Jeremiah,
> I've attached the Analyze below. I have no idea why the db thinks there
> is only 1 judge named simth. Is there some what I can inform the DB
> about this. In actuality, there aren't any judges named smith at the
> moment, but there are 22K people named smith.
No, Hannu meant that you may need to run the following command:
ANALYZE actor;
... to update the database statistics on the actors table. That is a
maintainence task that needs to be run periodically.
If that doesn't fix the bad plan, then the granularity of statistics on the
full_name column needs updating; I suggest:
ALTER TABLE actor ALTER COLUMN full_name SET STATISTICS 100;
ANALYZE actor;
And if it's still choosing a slow nested loop, up the stats to 250.
--
Josh Berkus
Aglio Database Solutions
San Francisco