SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Literal \'::ffff:8.8.8.8 is ipv4 string:                          \'
    Function isIPv4String (children 1)
     ExpressionList (children 1)
      Literal \'::ffff:8.8.8.8\'
