mysql查询当天的所有信息:
select * from test where year(regdate)=year(now()) and month(regdate)=month(now()) and day(regdate)=day(now())
这个有一些繁琐,还有简单的写法:
select * from table where date(regdate) = curdate();
另一种写法没测试过
查询当天的记录
select * from hb_article_view where TO_DAYS(hb_AddTime) = TO_DAYS(NOW())
date()函数获取日期部分, 扔掉时间部分,然后与当前日期比较即可
补充:本周、上周、本月、上个月份的数据
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
mysql查询多少秒内的数据
SELECT count( * ) AS c, sum( if( logusertype =2, logusertype, 0 ) ) /2 AS a, sum( if( logusertype =3, logusertype, 0 ) ) /3 AS b
FROM testlog WHERE UNIX_TIMESTAMP(NOW())-UNIX_TIMESTAMP( logendtime )<=30
查询30秒内记录的总数,loguser等于2的记录的总数和,和 loguser等于3的记录的总数.
if( logusertype =2, logusertype, 0 ) 如果logusetype等于2 就在logusertype上累加,否则加0。
sum( if( logusertype =2, logusertype, 0 ) ) 把logusertype都累加起来。
sum( if( logusertype =2, logusertype, 0 ) ) /2 AS a, 除以2是统计个数。
UNIX_TIMESTAMP(NOW())计算当前时间的秒数,
UNIX_TIMESTAMP( logendtime )计算logendtime的秒数
http://www.3lian.com/edu/2013/08-29/93024.html
DATE_FORMAT(date,format)
DATE_FORMAT(date,format)
date 参数是合法的日期。format 规定日期/时间的输出格式。
可以使用的格式有:
格式 | 描述 |
---|---|
%a | 缩写星期名 |
%b | 缩写月名 |
%c | 月,数值 |
%D | 带有英文前缀的月中的天 |
%d | 月的天,数值(00-31) |
%e | 月的天,数值(0-31) |
%f | 微秒 |
%H | 小时 (00-23) |
%h | 小时 (01-12) |
%I | 小时 (01-12) |
%i | 分钟,数值(00-59) |
%j | 年的天 (001-366) |
%k | 小时 (0-23) |
%l | 小时 (1-12) |
%M | 月名 |
%m | 月,数值(00-12) |
%p | AM 或 PM |
%r | 时间,12-小时(hh:mm:ss AM 或 PM) |
%S | 秒(00-59) |
%s | 秒(00-59) |
%T | 时间, 24-小时 (hh:mm:ss) |
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