AlterQuery  old_style (children 2)
 ExpressionList (children 2)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration y (children 1)
    DataType UInt32
  AlterCommand MODIFY_ORDER_BY (children 1)
   Function tuple (children 1)
    ExpressionList (children 2)
     Identifier x
     Identifier y
 Identifier old_style
