Re: Yet another slow nested loop

On Tue, Jun 16, 2009 at 4:36 PM, Tom Lane<tgl@sss.pgh.pa.us> wrote:
> Actually the easiest way to fix that is to get rid of the LIMIT.
> (Maybe use a cursor instead, and fetch only twenty rows.)  LIMIT
> magnifies the risks from any estimation error, and you've got a lot
> of that here ...

There's no cursor support in ActiveRecord, the ORM library we use, and
I'm not going to write it. Anyway, I would prefer not to gloss over
the underlying problem with something that requires a "TODO" next to
it. What can be done to fix the underlying problem? Nothing?

A.