Re: PostgreSQL domains and NOT NULL constraint

From: Vik Fearing <vik(at)postgresfriends(dot)org>
To: Isaac Morland <isaac(dot)morland(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Erki Eessaar <erki(dot)eessaar(at)taltech(dot)ee>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: PostgreSQL domains and NOT NULL constraint
Date: 2023-10-23 21:01:17
Message-ID: f15c2295-18de-41d5-baca-50e371769ed5@postgresfriends.org
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On 10/23/23 20:36, Isaac Morland wrote:
> Also, where it says "Expressions evaluating to TRUE or UNKNOWN succeed":
> Do we really mean "Expressions evaluating to TRUE or NULL succeed"?

No, UNKNOWN is the correct nomenclature for booleans.
--
Vik Fearing

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