SELECT HOUR(e.time) as Hour,count(*) as Count FROM error_log e WHERE e.date = '2017-09-02' GROUP BY HOUR(e.time) ORDER BY Hour(e.time);
下面是查询结果截图
在另一篇文章里,我总结了查询每半小时统计一次的方法。Mysql 查询一天中每半小时记录的数量
来源:https://www.cnblogs.com/jpfss/p/8759340.html
SELECT HOUR(e.time) as Hour,count(*) as Count FROM error_log e WHERE e.date = '2017-09-02' GROUP BY HOUR(e.time) ORDER BY Hour(e.time);
下面是查询结果截图
在另一篇文章里,我总结了查询每半小时统计一次的方法。Mysql 查询一天中每半小时记录的数量
来源:https://www.cnblogs.com/jpfss/p/8759340.html