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ALTER FOREIGN DATA WRAPPPostgreSQL 9.6.19 DocumenALTERnFOREIGN DATA WRAPPER(7)

NAME
       ALTER_FOREIGN_DATA_WRAPPER - change the definition of a foreign-data
       wrapper

SYNOPSIS
       ALTER FOREIGN DATA WRAPPER name
	   [ HANDLER handler_function |	NO HANDLER ]
	   [ VALIDATOR validator_function | NO VALIDATOR ]
	   [ OPTIONS ( [ ADD | SET | DROP ] option ['value'] [,	... ]) ]
       ALTER FOREIGN DATA WRAPPER name OWNER TO	{ new_owner | CURRENT_USER | SESSION_USER }
       ALTER FOREIGN DATA WRAPPER name RENAME TO new_name

DESCRIPTION
       ALTER FOREIGN DATA WRAPPER changes the definition of a foreign-data
       wrapper.	The first form of the command changes the support functions or
       the generic options of the foreign-data wrapper (at least one clause is
       required). The second form changes the owner of the foreign-data
       wrapper.

       Only superusers can alter foreign-data wrappers.	Additionally, only
       superusers can own foreign-data wrappers.

PARAMETERS
       name
	   The name of an existing foreign-data	wrapper.

       HANDLER handler_function
	   Specifies a new handler function for	the foreign-data wrapper.

       NO HANDLER
	   This	is used	to specify that	the foreign-data wrapper should	no
	   longer have a handler function.

	   Note	that foreign tables that use a foreign-data wrapper with no
	   handler cannot be accessed.

       VALIDATOR validator_function
	   Specifies a new validator function for the foreign-data wrapper.

	   Note	that it	is possible that pre-existing options of the
	   foreign-data	wrapper, or of dependent servers, user mappings, or
	   foreign tables, are invalid according to the	new validator.
	   PostgreSQL does not check for this. It is up	to the user to make
	   sure	that these options are correct before using the	modified
	   foreign-data	wrapper. However, any options specified	in this	ALTER
	   FOREIGN DATA	WRAPPER	command	will be	checked	using the new
	   validator.

       NO VALIDATOR
	   This	is used	to specify that	the foreign-data wrapper should	no
	   longer have a validator function.

       OPTIONS ( [ ADD | SET | DROP ] option ['value'] [, ... ]	)
	   Change options for the foreign-data wrapper.	 ADD, SET, and DROP
	   specify the action to be performed.	ADD is assumed if no operation
	   is explicitly specified. Option names must be unique; names and
	   values are also validated using the foreign data wrapper's
	   validator function, if any.

       new_owner
	   The user name of the	new owner of the foreign-data wrapper.

       new_name
	   The new name	for the	foreign-data wrapper.

EXAMPLES
       Change a	foreign-data wrapper dbi, add option foo, drop bar:

	   ALTER FOREIGN DATA WRAPPER dbi OPTIONS (ADD foo '1',	DROP 'bar');

       Change the foreign-data wrapper dbi validator to	bob.myvalidator:

	   ALTER FOREIGN DATA WRAPPER dbi VALIDATOR bob.myvalidator;

COMPATIBILITY
       ALTER FOREIGN DATA WRAPPER conforms to ISO/IEC 9075-9 (SQL/MED),	except
       that the	HANDLER, VALIDATOR, OWNER TO, and RENAME clauses are
       extensions.

SEE ALSO
       CREATE FOREIGN DATA WRAPPER (CREATE_FOREIGN_DATA_WRAPPER(7)), DROP
       FOREIGN DATA WRAPPER (DROP_FOREIGN_DATA_WRAPPER(7))

PostgreSQL 9.6.19		     2020	 ALTER FOREIGN DATA WRAPPER(7)

NAME | SYNOPSIS | DESCRIPTION | PARAMETERS | EXAMPLES | COMPATIBILITY | SEE ALSO

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