user_event ：用户事件表
create_time ：表中存储时间的字段
#获取当月数据
SELECT * FROM user_event WHERE DATE_FORMAT(create_time,'%Y-%m') = DATE_FORMAT(NOW(),'%Y-%m') #获取3月份数据
SELECT * FROM user_event WHERE DATE_FORMAT(create_time,'%Y-%m') = DATE_FORMAT('2016-03-01','%Y-%m') #获取三月份数据
SELECT * FROM user_event WHERE YEAR(create_time)='' AND MONTH(create_time)='' #获取本周数据
SELECT * FROM user_event WHERE YEARWEEK(DATE_FORMAT(create_time,'%Y-%m-%d')) = YEARWEEK(NOW()); #查询上周的数据
SELECT * FROM user_event WHERE YEARWEEK(DATE_FORMAT(create_time,'%Y-%m-%d')) = YEARWEEK(NOW())-1; #查询距离当前现在6个月的数据
SELECT * FROM user_event WHERE create_time BETWEEN DATE_SUB(NOW(),interval 6 month) and NOW(); #查询上个月的数据
SELECT * FROM user_event WHERE DATE_FORMAT(create_time,'%Y-%m')=DATE_FORMAT(DATE_SUB(CURDATE(), INTERVAL 1 MONTH),'%Y-%m')
以上语句整理自：http://www.jb51.net/article/32277.htm
#查询今天的信息记录：
SELECT * FROM user_event WHERE TO_DAYS(`create_time`) = TO_DAYS(NOW()); #查询昨天的信息记录：
SELECT * FROM user_event WHERE TO_DAYS(now()) - TO_DAYS(create_time) <= 1; #查询近7天的信息记录：
SELECT * FROM user_event WHERE DATE_SUB(curdate(), INTERVAL 7 DAY) <= DATE(create_time); #查询近30天的信息记录：
SELECT * FROM user_event WHERE DATE_SUB(curdate(), INTERVAL 30 DAY) <= DATE(create_time); #查询上一月的信息记录：
SELECT * FROM user_event WHERE PERIOD_DIFF(DATE_FORMAT(NOW(), '%Y%m'), DATE_FORMAT(create_time, '%Y%m')) =1;