mysql 查询 一天内 一周内 一年的数据

select * from wap_content where week(created_at) = week(now) 

如果你要严格要求是某一年的，那可以这样 

查询一天： 

select * from table where to_days(column_time) = to_days(now()); 
select * from table where date(column_time) = curdate(); 

查询一周： 

select * from table where DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= date(column_time); 

查询一个月： 

select * from table where DATE_SUB(CURDATE(), INTERVAL INTERVAL 1 MONTH) <= date(column_time);