mysql 获取规定时间段内的统计数据

mysql 获取规定时间段内的统计数据

按年统计

select 
  count(*), 
  date_format(order_info.create_time, '%y-%m-%d') as count_by_date 
from 
  order_info 
where 
  date_format(order_info.create_time, '%y') = '2017' 
group by 
  count_by_date 
order by null 

按月统计

select 
  count(*), 
  date_format(order_info.create_time, '%y-%m-%d') as count_by_date 
from 
  order_info 
where 
  date_format(order_info.create_time, '%y-%m') = '2017-04' 
group by 
  count_by_date 
order by null 

具体变换可以自己根据需求变更

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