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| author | Peter Eisentraut <peter_e@gmx.net> | 2018-11-13 10:42:43 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter_e@gmx.net> | 2018-11-20 09:37:02 +0100 |
| commit | 69bae23727253ca8b7616226020e241b8e923f4d (patch) | |
| tree | 40aced956cea7c9e59f0036fbfecc1c86dc1556c | |
| parent | a568cadaff2cfa0ec2a138ff4c5630050b03906b (diff) | |
| download | postgresql-69bae23727253ca8b7616226020e241b8e923f4d.tar.gz postgresql-69bae23727253ca8b7616226020e241b8e923f4d.zip | |
doc: Clarify CREATE TYPE ENUM documentation
The documentation claimed that an enum type requires "one or more"
labels, but since 1fd9883ff49, zero labels are also allowed.
Reported-by: Lukas Eder <lukas.eder@gmail.com>
Bug: #15356
| -rw-r--r-- | doc/src/sgml/ref/create_type.sgml | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/src/sgml/ref/create_type.sgml b/doc/src/sgml/ref/create_type.sgml index fa9b520b241..175315f3d7e 100644 --- a/doc/src/sgml/ref/create_type.sgml +++ b/doc/src/sgml/ref/create_type.sgml @@ -117,9 +117,12 @@ CREATE TYPE <replaceable class="parameter">name</replaceable> <para> The second form of <command>CREATE TYPE</command> creates an enumerated (enum) type, as described in <xref linkend="datatype-enum"/>. - Enum types take a list of one or more quoted labels, each of which + Enum types take a list of quoted labels, each of which must be less than <symbol>NAMEDATALEN</symbol> bytes long (64 bytes in a - standard <productname>PostgreSQL</productname> build). + standard <productname>PostgreSQL</productname> build). (It is possible to + create an enumerated type with zero labels, but such a type cannot be used + to hold values before at least one label is added using <xref + linkend="sql-altertype"/>.) </para> </refsect2> |