資料庫中SQL查詢指定日期內資料

mysql資料庫：

有時我們面要統計一下資料庫中指定日期的資料，如常用的，今天，昨天，明天，本週、上週、本月、上個月份的資料，除了我們可以使用strtotime來算還可以參考下面方法。

今天select * from 表名 where to_days(時間欄位名)=to_days(now());

昨天

select * from `表名` where to_days(now()) – to_days(時間欄位名) = 1;

/*datediff(now() , from_unixtime(`時間欄位名`)) = 1; //時間字段儲存型別為時間戳*/

7天select * from `表名` where date_sub(curdate(), interval 7 day) <= date(時間欄位名);

/*datediff(now() , from_unixtime(`時間欄位名`)) = 7; //時間字段儲存型別為時間戳*/

近30天select * from 表名 where date_sub(curdate(), interval 30 day) <= date(時間欄位名);

本月select * from 表名 where date_format(時間欄位名, '%y%m' = date_format(curdate(), '%y%m';

查詢當前這週的資料

select name,submittime from enterprise where yearweek(date_format(submittime,'%y-%m-%d')) = yearweek(now());

查詢上週的資料

select name,submittime from enterprise where yearweek(date_format(submittime,'%y-%m-%d')) = yearweek(now())-1;

查詢當前月份的資料

select name,submittime from enterprise where date_format(submittime,'%y-%m')=date_format(now(),'%y-%m')

查詢距離當前現在6個月的資料

select name,submittime from enterprise where submittime between date_sub(now(),interval 6 month) and now();

查詢上個月的資料

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())

從指定日期中獲取部分資料：

如月份：

select to_char(sysdate,'mm') from dual;

或者：

select extract(month from sysdate) from dual;