MySQL时间统计 来源于互联网，收集整理时间戳格式SELECT FROM_UNIXTIME(create_time,'%Y%u') weeks,COUNT(id) COUNT FROM role GROUP BY weeks; SELECT FROM_UNIXTIME(create_time,'%Y%m%d') days,COUNT(id) COUNT FROM role GROUP BY days; SELECT FROM_UNIXTIME(create_time,'%Y%m') months,COUNT(id) COUNT FROM role GROUP BY months DATE格式#按年汇总，统计： select sum(mymoney) as totalmoney, count(*) as sheets from mytable group by date_format(col, '%Y'); #按月汇总，统计： select sum(mymoney) as totalmoney, count(*) as sheets from mytable group by date_format(col, '%Y-%m'); #按季度汇总，统计： select sum(mymoney) as totalmoney,count(*) as sheets from mytable group by concat(date_format(col, '%Y'),FLOOR((date_format(col, '%m')+2)/3)); select sum(mymoney) as totalmoney,count(*) as sheets from mytable group by concat(date_format(col, '%Y'),FLOOR((date_format(col, '%m')+2)/3)); #按小时： select sum(mymoney) as totalmoney,count(*) as sheets from mytable group by date_format(col, '%Y-%m-%d %H '); #查询 本年度的数据: select * FROM mytable WHERE year(FROM_UNIXTIME(my_time)) = year(curdate()) #查询数据附带季度数: select id, quarter(FROM_UNIXTIME(my_time)) FROM mytable; #查询 本季度的数据: select * FROM mytable WHERE quarter(FROM_UNIXTIME(my_time)) = quarter(curdate()); #本月统计: select * from mytable where month(my_time1) = month(curdate()) and year(my_time2) = year(curdate()) #本周统计: select * from mytable where month(my_time1) = month(curdate()) and week(my_time2) = week(curdate()) #N天内记录: WHERE TO_DAYS(NOW())-TO_DAYS(时间字段)<=N