示例:
查询最近一周12:30分到13:00这段时间内的订单量:
SELECT * FROM T_ORDER O WHERE O.CREATEDATETIME BETWEEN SYSDATE-7 AND SYSDATE AND TO_CHAR(O.CREATEDATETIME, 'hh24:mi:ss') BETWEEN '12:30:00' AND '13:00:00'
查询某段日期内某个时间段的订单量:
SELECT * FROM T_ORDER O WHERE O.CREATEDATETIME BETWEEN TO_DATE('2016-10-08 12:30', 'yyyy-mm-dd hh24:mi') AND TO_DATE('2016-10-14 13:00', 'yyyy-mm-dd hh24:mi') AND TO_CHAR(O.CREATEDATETIME, 'hh24:mi:ss') BETWEEN '12:30:00' AND '13:00:00'
主要是思路。。。