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doc: fix ALTER DOMAIN domain_constraint to spell out options

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It used to refer to CREATE DOMAIN, but CREATE DOMAIN allows NULL, while
ALTER DOMAIN does not.

Reported-by: elionescu@yahoo.com

Discussion: https://postgr.es/m/172225092461.915373.6103973717483380183@wrigleys.postgresql.org

Backpatch-through: 12
This commit is contained in:
Bruce Momjian
2024-11-01 13:54:28 -04:00
parent 94a8c19eed
commit 4200fea80e
1 changed files with 6 additions and 2 deletions
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8
doc/src/sgml/ref/alter_domain.sgml
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@@ -41,6 +41,11 @@ ALTER DOMAIN <replaceable class="parameter">name</replaceable>
RENAME TO <replaceable class="parameter">new_name</replaceable> RENAME TO <replaceable class="parameter">new_name</replaceable>
ALTER DOMAIN <replaceable class="parameter">name</replaceable> ALTER DOMAIN <replaceable class="parameter">name</replaceable>
SET SCHEMA <replaceable class="parameter">new_schema</replaceable> SET SCHEMA <replaceable class="parameter">new_schema</replaceable>
<phrase>where <replaceable class="parameter">domain_constraint</replaceable> is:</phrase>
[ CONSTRAINT <replaceable class="parameter">constraint_name</replaceable> ]
{ NOT NULL | CHECK (<replaceable class="parameter">expression</replaceable>) }
</synopsis> </synopsis>
</refsynopsisdiv> </refsynopsisdiv>
@@ -79,8 +84,7 @@ ALTER DOMAIN <replaceable class="parameter">name</replaceable>
<term><literal>ADD <replaceable class="parameter">domain_constraint</replaceable> [ NOT VALID ]</literal></term> <term><literal>ADD <replaceable class="parameter">domain_constraint</replaceable> [ NOT VALID ]</literal></term>
<listitem> <listitem>
<para> <para>
This form adds a new constraint to a domain using the same syntax as This form adds a new constraint to a domain.
<link linkend="sql-createdomain"><command>CREATE DOMAIN</command></link>.
When a new constraint is added to a domain, all columns using that When a new constraint is added to a domain, all columns using that
domain will be checked against the newly added constraint. These domain will be checked against the newly added constraint. These
checks can be suppressed by adding the new constraint using the checks can be suppressed by adding the new constraint using the