SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier res
    Function if (alias res) (children 1)
     ExpressionList (children 3)
      Literal NULL
      Function range (children 1)
       ExpressionList (children 1)
        Function plus (children 1)
         ExpressionList (children 2)
          Identifier number
          Literal UInt64_1
      Function CAST (children 1)
       ExpressionList (children 2)
        Function concat (children 1)
         ExpressionList (children 2)
          Literal \'str_\'
          Function toString (children 1)
           ExpressionList (children 1)
            Identifier number
        Literal \'Nullable(String)\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_4
