mysql - 自动生成具有不同日期的行

Question

有没有办法自动生成具有不同日期的行，但保持其余数据相同？

例如，我尝试每 7 周生成一次以下内容？有没有一种敏锐的方法可以做到这一点，或者我应该手动重复以下操作？

INSERT INTO courses ( CourseCode ,OrganiserID ,TopicID ,StartDate ,EndDate ,Week ,LocationID ,CourseFee )


SELECT 'TEMP',9,51,'2018-01-22','2018-01-26',4 -- Week ,2,CourseFee FROM topic WHERE TopicID=51;

Answer 1

这是适合您的解决方案:

1. 创建一个带有id的表

2. 插入 1 到 52，持续 52 周

3. 从表格中选择一周的开始日期和结束日期。

4. 插入其他数据以及本周的开始日期和结束日期

<小时/>

Create table test1(id int not null PRIMARY KEY);

INSERT into test1 select 1;

insert ignore into test1 select id+(select max(id) from test1) from test1;

 insert ignore into test1 select id+(select max(id) from test1) from test1;

 insert ignore into test1 select id+(select max(id) from test1) from test1;

 insert ignore into test1 select id+(select max(id) from test1) from test1;

 insert ignore into test1 select id+(select max(id) from test1) from test1;

 insert ignore into test1 select id+(select max(id) from test1) from test1;

 delete from test1 where id >52;

 -- Select 52 week begin and end date
 select DATE_ADD('2017-01-02',INTERVAL (id-1)*7 DAY) Week_begin_date, DATE_ADD('2017-01-02',INTERVAL (id-1)*7+4 DAY) Week_end_date from test1;

 --Insert Data for 52 weeks
 INSERT INTO courses ( CourseCode ,OrganiserID ,TopicID ,StartDate ,EndDate ,Week ,LocationID ,CourseFee )
 SELECT 'TEMP',9,51,DATE_ADD('2017-01-02',INTERVAL (id-1)*7 DAY), DATE_ADD('2017-01-02',INTERVAL (id-1)*7+4 DAY) ,id, <LocationID_value>, <CourseFee_value> from test1;