需求:分组,按照月份进行分组
sampling_time 是个时间戳的timestamp 类型
select TO_CHAR(sampling_time,‘YYYY-MM’),count(1) from ts01_d_baoxin_traffic group by
TO_CHAR(sampling_time,‘YYYY-MM’)
image.png
需求:分组,按照月份进行分组
sampling_time 是个时间戳的timestamp 类型
select TO_CHAR(sampling_time,‘YYYY-MM’),count(1) from ts01_d_baoxin_traffic group by
TO_CHAR(sampling_time,‘YYYY-MM’)