Re: Bug #759: 7.3beta1 DROP COLUMN DEPENDENCY PROBLEM

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Rod Taylor <rbt(at)zort(dot)ca>
Cc: tim(at)ametco(dot)co(dot)uk, pgsql-bugs(at)postgresql(dot)org
Subject: Re: Bug #759: 7.3beta1 DROP COLUMN DEPENDENCY PROBLEM
Date: 2002-09-06 23:30:01
Message-ID: 20017.1031355001@sss.pgh.pa.us
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Rod Taylor <rbt(at)zort(dot)ca> writes:
> The big difference is that the INNER JOIN code needs to drop one of the
> colb's coming up with a virtual relation cola, colb, colc; where the
> other doesn't have such a renaming scheme.

On reflection I think it might be possible to make this work the way
Tim wants: I think it would be okay for the dependency-extracter code
to ignore the Var lists that are attached to join RTEs. Needs more
thought though, and I don't plan to think about it before Monday;
I'm taking the weekend off ...

regards, tom lane

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