oracle中查找某个时间段内的数据

例子：

1）select * from tableName t where start_times > to_date('2015/6/26 10:00:00','yyyy/mm/dd hh24:mi:ss');

2）select * from tableName t where start_times < to_date('2015/6/26 10:00:00','yyyy/mm/dd hh24:mi:ss');

3）select * from tableName t where start_times between to_date('2015/6/26 10:00:00','yyyy/mm/dd hh24:mi:ss') and to_date('2015/6/26 11:00:00','yyyy/mm/dd hh24:mi:ss');