SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function CAST (children 1)
     ExpressionList (children 2)
      Function tupleElement (children 1)
       ExpressionList (children 2)
        Function CAST (children 1)
         ExpressionList (children 2)
          Function tuple (children 1)
           ExpressionList (children 3)
            Literal UInt64_3
            Literal UInt64_4
            Literal UInt64_5
          Literal \'Tuple(UInt64, UInt64, UInt64)\'
        Literal UInt64_2
      Literal \'Int32\'
