diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ref/create_domain.sgml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/create_domain.sgml b/doc/src/sgml/ref/create_domain.sgml index ce555203486..c111285a69c 100644 --- a/doc/src/sgml/ref/create_domain.sgml +++ b/doc/src/sgml/ref/create_domain.sgml @@ -283,7 +283,8 @@ CREATE TABLE us_snail_addy ( <para> The syntax <literal>NOT NULL</literal> in this command is a <productname>PostgreSQL</productname> extension. (A standard-conforming - way to write the same would be <literal>CHECK (VALUE IS NOT + way to write the same for non-composite data types would be + <literal>CHECK (VALUE IS NOT NULL)</literal>. However, per <xref linkend="sql-createdomain-notes"/>, such constraints are best avoided in practice anyway.) The <literal>NULL</literal> <quote>constraint</quote> is a |