在实际项目开发过程中，按不同时间维度查询业务数据的操作异常频繁。比较多的操作如支持按时间周期范围做列表数据的筛选，或者是按年月日等维度的图表展示，亦或者是首页的概况，三维大屏的展示等，都离不开不同时间周期查询。

列表台账数据的自定义时间范围查询功能，请点击这里查看详情。

以下是mysql按照不同时间周期做数据的分组统计，也可以适用于相关周期的数据查询。

需要注意的点：sql关键字的执行顺序，具体可以参看下方链接：

https://www.cnblogs.com/virgosnail/p/16061395.html

1.年周期

select count(sai.id) AS sumSesr,
       DATE_FORMAT(sai.apply_time, '%Y') AS remindTimeStr
from supplies_apply_info sai
group by remindTimeStr
order by remindTimeStr ASC 

2.季度周期

select count(sai.id) AS sumSesr,
       CONCAT(YEAR(sai.apply_time), '-Q', QUARTER(sai.apply_time)) AS remindTimeStr
from supplies_apply_info sai
group by remindTimeStr
order by remindTimeStr ASC 

3.月周期

select count(sai.id) AS sumSesr,
       DATE_FORMAT(sai.apply_time, '%Y-%m') AS remindTimeStr
from supplies_apply_info sai
group by remindTimeStr
order by remindTimeStr ASC 

4.周的周期

select count(sai.id) AS sumSesr,
       CONCAT(YEAR(sai.apply_time), '-W', LPAD(WEEK(sai.apply_time), 2, '0')) AS remindTimeStr
from supplies_apply_info sai
group by remindTimeStr
order by remindTimeStr ASC 

5.日周期

select count(sai.id) AS sumSesr,
       DATE_FORMAT(sai.apply_time, '%Y-%m-%d') AS remindTimeStr
from supplies_apply_info sai
group by remindTimeStr
order by remindTimeStr ASC