[ WITH [ RECURSIVE ] $with_query$ [ , ... ] ] UPDATE { ONLY $table_name$ | $table_name$ [ * ] } [ [ AS ] $alias$ ]
    SET { $column_name$ = { $expression$ | DEFAULT } |
    ( $column_name$ [ , ... ] ) = [ ROW ] ( { $expression$ | DEFAULT } [ , ... ] ) |
    ( $column_name$ [ , ... ] ) = ( $sub-SELECT$ )
    } [ , ... ]
    [ FROM $from_item$ [ , ... ] ]
    [ WHERE $condition$ | WHERE CURRENT OF $cursor_name$ ]
    [ RETURNING { * | { $output_expression$ [ [ AS ] $output_name$ ] } [ , ... ] } ]