From: Laurenz Albe <laurenz.albe@cybertec.at>
To: eugene.losowskigallagher@googlemail.com
To: pgsql-docs@lists.postgresql.org
Subject: Re: Constraint check is missing value check ARRAY
Date: Sun, 13 Sep 2026 23:41:40 +0200
Message-ID: <fe59aa65d62c6088ad494b278be8348302ccb4b4.camel@cybertec.at> (raw)
In-Reply-To: <178915377800.2258529.262291845008098767@wrigleys.postgresql.org>
References: <178915377800.2258529.262291845008098767@wrigleys.postgresql.org>
On Fri, 2026-09-11 at 19:09 +0000, PG Doc comments form wrote:
> This page is missing the value check array.
> https://www.postgresql.org/docs/current/ddl-constraints.html
>
>
> Example:
> CREATE TABLE demo
> (
> id bigint NOT NULL DEFAULT nextval('seq_ttelephone_id'::regclass),
> usage character(1) NOT NULL DEFAULT 'M',
> CONSTRAINT ck_ttelephone_usage_1 CHECK (usage = ANY
> (ARRAY['M'::character(1),'H'::character(1),'W'::character(1),'F'::character(1)]))
> NOT VALID
> )
> );
>
> This is entirely missing from the documentation.
>
> Key thing to point out is the type cast must match:
> e.g. character(1) for type of character(1) etc
Which aspect of this requires more detailed documentation than already exists?
Can you be more descriptive?
Yours,
Laurenz Albe
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To: pgsql-docs@postgresql.org
Cc: laurenz.albe@cybertec.at, eugene.losowskigallagher@googlemail.com, pgsql-docs@lists.postgresql.org
Subject: Re: Constraint check is missing value check ARRAY
In-Reply-To: <fe59aa65d62c6088ad494b278be8348302ccb4b4.camel@cybertec.at>
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