diff options
| -rw-r--r-- | doc/src/sgml/fdwhandler.sgml | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/doc/src/sgml/fdwhandler.sgml b/doc/src/sgml/fdwhandler.sgml index c8ae861852a..0637de7d1f6 100644 --- a/doc/src/sgml/fdwhandler.sgml +++ b/doc/src/sgml/fdwhandler.sgml @@ -38,14 +38,20 @@ </para> <para> - The validator function is responsible for validating options given in the - <command>CREATE FOREIGN DATA WRAPPER</command>, <command>CREATE - SERVER</command> and <command>CREATE FOREIGN TABLE</command> commands. + The validator function is responsible for validating options given in + <command>CREATE</command> and <command>ALTER</command> commands for its + foreign data wrapper, as well as foreign servers, user mappings, and + foreign tables using the wrapper. The validator function must be registered as taking two arguments, a text array containing the options to be validated, and an OID representing the type of object the options are associated with (in the form of the OID - of the system catalog the object would be stored in). If no validator - function is supplied, the options are not checked at object creation time. + of the system catalog the object would be stored in, either + <literal>ForeignDataWrapperRelationId</>, + <literal>ForeignServerRelationId</>, + <literal>UserMappingRelationId</>, + or <literal>ForeignTableRelationId</>). + If no validator function is supplied, options are not checked at object + creation time or object alteration time. </para> <para> |