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From: Alvaro Herrera <[email protected]>
To: KES <[email protected]>
Cc: Bruce Momjian <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Cc: [email protected]
Subject: Re: Typo in doc or wrong EXCLUDE implementation
Date: Wed, 8 Aug 2018 11:02:39 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 2018-Aug-08, KES wrote:

> I do not know many internals and maybe wrong.
> 
> But from my point of view with my current knowledge. 
> If such exclusion constraint would be marked as UNIQUE we can use it for FK while implementing temporal/bi-temporal tables.
> 
> And this will be simplify relationing while implementing them.

I think what you're looking for is "inclusion constraints" from Jeff
Davis:

https://postgr.es/m/1423354088.12308.117.camel@jeff-desktop

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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