mysql 時間查詢

select * from member where datediff(now(),mem_reg_time) = 0;   // 查詢今天註冊的會員

select * from member where datediff(now(),mem_reg_time) = 1; // 查詢昨天註冊的會員

select * from member where datediff(now(),mem_reg_time) < n;   // 查詢最近n天註冊的會員

今天select * from signn where to_days(signdate) = to_days(now());

昨天select * from signn where to_days(now()) - to_days(signdate) = 1;

昨天和今天

select * from signn where to_days(now()) - to_days(signdate) <= 1;

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

select * from signn where date_sub(curdate(), interval 7 day) <= date(signdate);

近30天

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

select * from signn where date_sub(curdate(), interval 30 day) <= date(signdate);

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

select * from signn where date_format(signdate, '%y%m') = date_format(curdate(), '%y%m')

上一月select * from 表名 where period_diff( date_format( now( ) , '%y%m' ) , date_format( 時間欄位名, '%y%m' ) ) =1

select * from signn where period_diff(date_format(now(), '%y%m'), date_format(signdate, '%y%m')) = 1

查詢一周：

select * from table   where date_sub(curdate(), interval 7 day) <= date(column_time);

select * from signn where date_sub(curdate(), interval 7 day) <= date(signdate);

查詢乙個月：

select * from table where date_sub(curdate(), interval 1 month) <= date(column_time);

select * from signn where date_sub(curdate(), interval 1 month) <= date(signdate);

查詢本季度資料

select * from `ht_invoice_information` where quarter(create_date)=quarter(now());

select * from signn where quarter(signdate) = quarter(now());

查詢上季度資料

select * from `ht_invoice_information` where quarter(create_date)=quarter(date_sub(now(),interval 1 quarter));

select * from signn where quarter(signdate) = quarter(date_sub(now(),interval 1 quarter));

查詢本年資料

select * from `ht_invoice_information` where year(create_date)=year(now());

select * from signn where year(signdate) = year(now());

查詢上年資料

select * from `ht_invoice_information` where year(create_date)=year(date_sub(now(),interval 1 year));

select * from signn where year(signdate) = year(date_sub(now(), interval 1 year));

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