SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function reverse (children 1)
     ExpressionList (children 1)
      Function array (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 3)
          Literal UInt64_1
          Literal \'Hello\'
          Function array (children 1)
           ExpressionList
        Function tuple (children 1)
         ExpressionList (children 3)
          Literal Float64_nan
          Literal \'World\'
          Literal Array_[NULL]