Re: Allowing NOT IN to use ANTI joins

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Greg Stark <stark(at)mit(dot)edu>, Marti Raudsepp <marti(at)juffo(dot)org>, David Rowley <dgrowleyml(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Allowing NOT IN to use ANTI joins
Date: 2014-06-24 22:44:36
Message-ID: 21491.1403649876@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> Having said that, any join plan that relies upon a constraint will
> still be valid even if we drop a constraint while the plan executes
> because any new writes will not be visible to the executing join plan.

mumble ... EvalPlanQual ?

regards, tom lane

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