Re: Constraint propagating for equal fields

From: Greg Stark <gsstark(at)mit(dot)edu>
To: Віталій Тимчишин <tivv00(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Constraint propagating for equal fields
Date: 2010-01-30 02:30:19
Message-ID: 407d949e1001291830v5245c2bbhebd14dc0e183eb1@mail.gmail.com
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2010/1/28 Віталій Тимчишин <tivv00(at)gmail(dot)com>
>
> I've always thought that PostgreSQL would propagate constraint from field1 to field2 if condition says field1=field2, but this does not seem the case:

version?

--
greg

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