mysql如何查询当前周的第一天的日期？
转自：http://blog.csdn.net/zzhongcy/article/details/43016685
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 1 DAY);
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MySQL查询的方式很多，下面为您介绍的MySQL查询实现的是查询本周、上周、本月、上个月份的数据，如果您对MySQL查询方面感兴趣的话，不妨一看。
查询当前今天的数据
SELECT name,submittime FROM enterprise WHERE YEARWEEK(date_format(submittime,'%Y-%m-%d')) =date_format(now(),'%Y-%m-%d');
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
############################
默认情况下， 这个 yearweek、WEEK ( 日期 ) 是 每把周日，作为一周的开始。
有的是周日开始，有的是周一开始。而工作中有的时候每周是从周六开始算的，有些数据需要按周统计，那么那种方式比较好呢？
select yearweek(now() - INTERVAL 1 DAY) 从周1开始本周计算
select yearweek('2015-02-02 11:12:00' - INTERVAL 1 DAY)
############################
摘自：http://hideto.javaeye.com/blog/255816
当前week的第一天：
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 1 DAY)
当前week的最后一天：
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) – 5 DAY)
前一week的第一天：
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 8 DAY)
前一week的最后一天：
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 2 DAY)
前两week的第一天：
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 15 DAY)
前两week的最后一天：
select date_sub(curdate(),INTERVAL WEEKDAY(curdate()) + 9 DAY)
当前month的第一天：
SELECT concat(date_format(LAST_DAY(now()),’%Y-%m-’),’01′)
当前month的最后一天：
SELECT LAST_DAY(now())
前一month的第一天：
SELECT concat(date_format(LAST_DAY(now() – interval 1 month),’%Y-%m-’),’01′)
前一month的最后一天：
SELECT LAST_DAY(now() – interval 1 month)
前两month的第一天：
SELECT concat(date_format(LAST_DAY(now() – interval 2 month),’%Y-%m-’),’01′)
前两month的最后一天：
SELECT LAST_DAY(now() – interval 2 month)
当前quarter的第一天：
select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-3 month),’%Y-%m-’),’01′)
当前quarter的最后一天：
select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-1 month)
前一quarter的第一天：
select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-6 month),’%Y-%m-’),’01′)
前一quarter的最后一天：
select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-4 month)
前两quarter的第一天：
select concat(date_format(LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-9 month),’%Y-%m-’),’01′)
前两quarter的最后一天：
select LAST_DAY(MAKEDATE(EXTRACT(YEAR FROM CURDATE()),1) + interval QUARTER(CURDATE())*3-7 month)
UNIX时间戳转换为日期用函数： FROM_UNIXTIME()
- select FROM_UNIXTIME(1156219870);
日期转换为UNIX时间戳用函数： UNIX_TIMESTAMP()
- Select UNIX_TIMESTAMP(’2006-11-04 12:23:00′);
########################
今天
select * from 表名 where to_days(时间字段名) = to_days(now());
昨天
SELECT * FROM 表名 WHERE TO_DAYS( NOW( ) ) - TO_DAYS( 时间字段名) <= 1
7天
SELECT * FROM 表名 where DATE_SUB(CURDATE(), INTERVAL 7 DAY) <= date(时间字段名)
近30天
SELECT * FROM 表名 where DATE_SUB(CURDATE(), INTERVAL 30 DAY) <= date(时间字段名)
本月
SELECT * FROM 表名 WHERE DATE_FORMAT( 时间字段名, '%Y%m' ) = DATE_FORMAT( CURDATE( ) , '%Y%m' )
上一月
SELECT * FROM 表名 WHERE PERIOD_DIFF( date_format( now( ) , '%Y%m' ) , date_format( 时间字段名, '%Y%m' ) ) =1
#查询本季度数据
select * from `ht_invoice_information` where QUARTER(create_date)=QUARTER(now());
#查询上季度数据
select * from `ht_invoice_information` where QUARTER(create_date)=QUARTER(DATE_SUB(now(),interval 1 QUARTER));
#查询本年数据
select * from `ht_invoice_information` where YEAR(create_date)=YEAR(NOW());
#查询上年数据
select * from `ht_invoice_information` where year(create_date)=year(date_sub(now(),interval 1 year));
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;//国外一周是从周日到周六来算的 SELECT * FROM ordersrecord WHERE YEARWEEK(ordertime,1) =YEARWEEK(date_sub(curdate(),interval 7 day),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
where date(regdate) = curdate();
select * from test where year(regdate)=year(now()) and month(regdate)=month(now()) and day(regdate)=day(now())
SELECT date( c_instime ) ,curdate( )
FROM `t_score`
WHERE 1
LIMIT 0 , 30
