MySQL的YEARWEEK函数以及查询本周数据
MySQL 的 YEARWEEK 是获取年份和周数的一个函数，函数形式为 YEARWEEK(date[,mode])
例如 2010-3-14 ，礼拜天
SELECT YEARWEEK(‘2010-3-14‘) 返回 11
SELECT YEARWEEK(‘2010-3-14‘,1) 返回 10
其中第二个参数是 mode ，具体指的意思如下：
Mode
First day of week
Range
Week 1 is the first week …
0
Sunday
0-53
with a Sunday in this year
1
Monday
0-53
with more than 3 days this year
2
Sunday
1-53
with a Sunday in this year
3
Monday
1-53
with more than 3 days this year
4
Sunday
0-53
with more than 3 days this year
5
Monday
0-53
with a Monday in this year
6
Sunday
1-53
with more than 3 days this year
7
Monday
1-53
with a Monday in this year
select YEARWEEK(now(),1) - YEARWEEK(‘2014-06-23‘,1) from dual -- 查询给定日期和当期日期是否为同一个星期，星期一为一周的第一天。
查询当前这周的数据
SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,‘%Y-%m-%d‘)) = YEARWEEK(now());
查询上周的数据
SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,‘%Y-%m-%d‘)) = YEARWEEK(now())-1;
查询当前月份的数据
select name,submittime from enterprise where date_format(submittime,‘%Y-%m‘)=date_format(now(),‘%Y-%m‘)
查询距离当前现在6个月的数据
select name,submittime from enterprise where submittime between date_sub(now(),interval 6 month) and now();
查询上个月的数据
select name,submittime from enterprise where date_format(submittime,‘%Y-%m‘)=date_format(DATE_SUB(curdate(), INTERVAL 1 MONTH),‘%Y-%m‘);
select * from `user` where DATE_FORMAT(pudate,‘%Y%m‘) = DATE_FORMAT(CURDATE(),‘%Y%m‘) ;
select * from user where WEEKOFYEAR(FROM_UNIXTIME(pudate,‘%y-%m-%d‘)) = WEEKOFYEAR(now());
select * from user where MONTH(FROM_UNIXTIME(pudate,‘%y-%m-%d‘)) = MONTH(now());
select * from [user] where YEAR(FROM_UNIXTIME(pudate,‘%y-%m-%d‘)) = YEAR(now()) and MONTH(FROM_UNIXTIME(pudate,‘%y-%m-%d‘)) = MONTH(now());
select * from [user] where pudate between 上月最后一天 and 下月第一天;
原文：http://www.cnblogs.com/ganymede/p/3811873.html
