SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier res
    Function array (alias res) (children 1)
     ExpressionList (children 4)
      Literal UInt64_1
      Literal \'str_1\'
      Literal UInt64_2
      Literal \'str_2\'
