按周select DATE_FORMAT(create_time,%Y%u) weeks,count(caseid) count from tc_case group by weeks;按月select DATE_FORMAT(create_time,%Y%m) months,count(caseid) count from tc_case group by months;按天select DATE_FORMAT(create_time,%Y%m%d) days,count(caseid) count from tc_case group by days;按小时select DATE_FORMAT(create_time,%Y%m%d%H) hours,count(caseid) count from tc_case group by hours;DATE_FORMAT方法说明格式DATE_FORMAT(date,format)根据format字符串格式化date值。下列修饰符可以被用在format字符串中%M 月名字(January……December)%W 星期名字(Sunday……Saturday)%D 有英语前缀的月份的日期(1st, 2nd, 3rd, 等等。%Y 年, 数字, 4 位%y 年, 数字, 2 位%a 缩写的星期名字(Sun……Sat)%d 月份中的天数, 数字(00……31)%e 月份中的天数, 数字(0……31)%m 月, 数字(01……12)%c 月, 数字(1……12)%b 缩写的月份名字(Jan……Dec)%j 一年中的天数(001……366)%H 小时(00……23)%k 小时(0……23)%h 小时(01……12)%I 小时(01……12)%l 小时(1……12)%i 分钟, 数字(00……59)%r 时间,12 小时(hh:mm:ss [AP]M)%T 时间,24 小时(hh:mm:ss)%S 秒(00……59)%s 秒(00……59)%p AM或PM%w 一个星期中的天数(0Sunday ……6Saturday %U 星期(0……52), 这里星期天是星期的第一天%u 星期(0……52), 这里星期一是星期的第一天%% 一个文字“%”。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