AlterQuery  to_table (children 2)
 ExpressionList (children 1)
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration n2 (children 1)
    DataType Dynamic (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier max_types
        Literal UInt64_500
 Identifier to_table
