Re: "Constraint exclusion" is not general enough

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Rod Taylor <pg(at)rbt(dot)ca>
Cc: Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org, Martin Lesser <ml-pgsql(at)bettercom(dot)de>
Subject: Re: "Constraint exclusion" is not general enough
Date: 2006-08-07 17:44:46
Message-ID: 3400.1154972686@sss.pgh.pa.us
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Rod Taylor <pg(at)rbt(dot)ca> writes:
> A simple way of doing this might be to use a minimum cost number?

But you don't have any cost numbers until after you've done the plan.

regards, tom lane

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