<!-- 按日查询 -->  
SELECT DATE_FORMAT(created_date,'%Y-%m-%d') as time,sum(money) money FROM o_finance_detail where org_id = 1000  GROUP BY  time  
<!-- 按月查询 -->  
SELECT DATE_FORMAT(created_date,'%Y-%m') as time,sum(money)  money FROM o_finance_detail where org_id = 1000  GROUP BY  time  
<!-- 按年查询 -->  
SELECT DATE_FORMAT(created_date,'%Y') as time,sum(money)  money FROM o_finance_detail where org_id = 1000  GROUP BY  time   
<!-- 按周查询 -->  
SELECT DATE_FORMAT(created_date,'%Y-%u') as time,sum(money)  money FROM o_finance_detail where org_id = 1000  GROUP BY  time  

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