> There's a much more fundamental reason why this will never happen, which
> is that the query planner is not licensed to decide that you only want
> an approximate and not an exact answer to your query.

I think it would be worth talking about when someone wants to implement
it.  I'd imagine it would require setting a GUC, though, which would be
off by default for obvious reasosn.

> If MVs were guaranteed always up-to-date, maybe we could think about
> automatic use of them --- but that's a far different feature from what
> Kevin has here.

And of limited utility, as mentioned.


-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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