将数据插入2个表中

Question

我想问一下如何在数据库中的多个表中插入数据。 我有两张名为大学和部门的表。

university
uni_id |uni_name

department
dept_id|uni_id|dname

uni_id是部门中的外键，uni_id在大学表中设置为自动增量...

insert into university (uni_name) values ("any uni");
insert into department ( uni_id,dname )  values ("same as in uni_id in university table","any") 

我无法在department表（外键）中插入uni_id。大学表中的问题相同。

Answer 1

你可以通过插入带内连接的选择来实现这一点：

 insert into department ( uni_id,dname )  
 select u.uni_id , "any" 
 from university u 
 inner join department d
 on d.uni_id = u.uni_id

Answer 2

希望它能奏效：

insert into university (uni_name) values ("any uni");
insert into department ( uni_id,dname )  values (LAST_INSERT_ID(),"any")

Answer 3

insert into university (uni_name) values ("any uni");

插入部门表时

insert into department ( uni_id,dname ) 
 select u.uni_id , "any" 
 from university where uni_name = "any uni";