SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function IPv6NumToString (children 1)
       ExpressionList (children 1)
        Function toFixedString (children 1)
         ExpressionList (children 2)
          Literal \'\'
          Literal UInt64_16
      Literal \'::\'
