Oracle:

CALL

CALL
{ routine_clause
| object_access_expression
}
[ INTO :host_variable
[ [ INDICATOR ] :indicator_variable ] ] ;

routine_clause::=
[ schema. ] [ type. | package. ]
{ function | procedure | method }
[ @dblink_name ]
( [ argument [, argument ]... ] )
object_access_expression::=
{ table_alias.column.
| object_table_alias.
| (expr).
}
{ attribute [.attribute ]...
[.method ([ argument [, argument ]... ]) ]
| method ([ argument [, argument ]... ])
}

Example

CALL emp_mgmt.remove_dept(162);

CREATE OR REPLACE FUNCTION ret_warehouse_typ(x warehouse_typ)
RETURN warehouse_typ
IS
BEGIN
RETURN x;
END;
/
CALL ret_warehouse_typ(warehouse_typ(234, 'Warehouse 234',
2235)).ret_name()
INTO :x;

PRINT x;

X
--------------------------------
Warehouse 234