ALTER FOREIGN TABLE [ IF EXISTS ] { ONLY $name$ | $name$ [ * ] }
    $action$ [ , ... ]

ALTER FOREIGN TABLE [ IF EXISTS ] { ONLY $name$ | $name$ [ * ] }
    RENAME [ COLUMN ] $column_name$ TO $new_column_name$

ALTER FOREIGN TABLE [ IF EXISTS ] $name$
    RENAME TO $new_name$

ALTER FOREIGN TABLE [ IF EXISTS ] $name$
    SET SCHEMA $new_schema$

where $action$ is:

ADD [ COLUMN ] $column_name$ $data_type$ [ COLLATE $collation$ ] [ $column_constraint$ [ ... ] ] |
    DROP [ COLUMN ] [ IF EXISTS ] $column_name$ [ RESTRICT | CASCADE ] |
    ALTER [ COLUMN ] $column_name$ [ SET DATA ] TYPE $data_type$ [ COLLATE $collation$ ] |
    ALTER [ COLUMN ] $column_name$ SET DEFAULT $expression$ |
    ALTER [ COLUMN ] $column_name$ DROP DEFAULT |
    ALTER [ COLUMN ] $column_name$ { SET | DROP } NOT NULL |
    ALTER [ COLUMN ] $column_name$ SET STATISTICS $integer$ |
    ALTER [ COLUMN ] $column_name$ SET ( $attribute_option$ = $value$ [ , ... ] ) |
    ALTER [ COLUMN ] $column_name$ RESET ( $attribute_option$ [ , ... ] ) |
    ALTER [ COLUMN ] $column_name$ SET STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN } |
    ALTER [ COLUMN ] $column_name$ OPTIONS ( [ ADD | SET | DROP ] $option$ ['$value$'] [ , ... ]) |
    ADD $table_constraint$ [ NOT VALID ] |
    VALIDATE CONSTRAINT $constraint_name$ |
    DROP CONSTRAINT [ IF EXISTS ] $constraint_name$ [ RESTRICT | CASCADE ] |
    DISABLE TRIGGER [ $trigger_name$ | ALL | USER ] |
    ENABLE TRIGGER [ $trigger_name$ | ALL | USER ] |
    ENABLE REPLICA TRIGGER $trigger_name$ |
    ENABLE ALWAYS TRIGGER $trigger_name$ |
    SET WITHOUT OIDS |
    INHERIT $parent_table$ |
    NO INHERIT $parent_table$ |
    OWNER TO { $new_owner$ | CURRENT_ROLE | CURRENT_USER | SESSION_USER } |
    OPTIONS ( [ ADD | SET | DROP ] $option$ ['$value$'] [ , ... ])

where $column_constraint$ is:

[ CONSTRAINT $constraint_name$ ]
    { NOT NULL |
    NULL |
    CHECK ( $expression$ ) [ NO INHERIT ] |
    DEFAULT $default_expr$ |
    GENERATED ALWAYS AS ( $generation_expr$ ) STORED |
    GENERATED { ALWAYS | BY DEFAULT } AS IDENTITY [ ( $sequence_options$ ) ] |
    UNIQUE [ NULLS [ NOT ] DISTINCT ] $index_parameters$ |
    PRIMARY KEY $index_parameters$ |
    REFERENCES $reftable$ [ ( $refcolumn$ ) ] [ MATCH FULL | MATCH SIMPLE ]
    [ ON DELETE $referential_action$ ] [ ON UPDATE $referential_action$ ] }
    [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]

where $referential_action$ is:

{ NO ACTION | RESTRICT | CASCADE | SET NULL [ ( $column_name$ [ , ... ] ) ] | SET DEFAULT [ ( $column_name$ [ , ... ] ) ] }