SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function IPv6StringToNum (children 1)
       ExpressionList (children 1)
        Literal \'\'
      Function toFixedString (children 1)
       ExpressionList (children 2)
        Function materialize (children 1)
         ExpressionList (children 1)
          Literal \'\'
        Literal UInt64_16
