Re: *_collapse_limit, geqo_threshold

Tom Lane escribió:

> My own thought is that from_collapse_limit has more justification,
> since it basically acts to stop a subquery from being flattened when
> that would make the parent query too complex, and that seems like a
> more understandable and justifiable behavior than treating JOIN
> syntax specially.

Isn't that what we use OFFSET 0 for?  That one has also the nice
property that you can actually specify which subquery you want to
prevent from being flattened.

Personally I have never seen a case where the collapse_limits were
useful tools.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.