实例:
@Select(value = { "SELECT meeting_name from (select *, webex.meeting_time as sart ,date_add(webex.meeting_time, interval webex.meeting_length minute) as e from webex )as t where sart >= '${meeting_time}' and '${meeting_time}' <= t.e" })
@ResultType(value=String.class)
List<String> select_by_time (@Param("meeting_time")String meeting_time);