presto-main/src/main/java/io/prestosql/type/TimestampWithTimeZoneOperators.java/TimestampWithTimeZoneOperators/notEqual
class TimestampWithTimeZoneOperators:    @ScalarOperator(NOT_EQUAL)
    @SqlType(StandardTypes.BOOLEAN)
    @SqlNullable
    public static Boolean notEqual(@SqlType(StandardTypes.TIMESTAMP_WITH_TIME_ZONE) long left, @SqlType(StandardTypes.TIMESTAMP_WITH_TIME_ZONE) long right)
    {
        return unpackMillisUtc(left) != unpackMillisUtc(right);
    }