号码 次数 开始时间 结束时间
phone number startTime stopTime
11 5 201807191000 201807191005
11 3 201807191005 201807191010
11 2 201807191010 201807191015
11 4 201807191015 201807191020
11 9 201807191020 201807191025
11 8 201807191025 201807191030
11 2 201807191030 201807191035
11 4 201807191035 201807191040
11 1 201807191040 201807191045
11 2 201807191045 201807191050
11 4 201807191050 201807191055
11 5 201807191055 201807191100
11 2 201807191100 201807191105
需求是把每个号(这里就贴出一个号码)码每半个小时的次数相加,请问有什么方法?