使用select语句将记录从一个表插入另一个表

Question

这里我试图插入来自两个不同表格的patient_id和nurse_id。

insert into nurse_take_care(patient_id,nurse_id) values (patient_id(select MAX(p_id) from patient;), nurse_id(Select n_id from nurse order by Rand() limit 1;))

这是正确的做法吗？

Answer 1

查询将如下：

insert into nurse_take_care(patient_id,nurse_id) values 
(select MAX(p_id) from patient limit 1, Select n_id from nurse order by Rand() limit 1);

Answer 2

尝试这样的事情：

INSERT INTO nurse_take_care (patient_id, nurse_id)
SELECT ( SELECT MAX(p_id) FROM patient ),
       ( SELECT n_id FROM nurse ORDER BY RAND() LIMIT 1 )

Answer 3

请试试这个insert into nurse_take_care(patient_id,nurse_id) SELECT (select MAX(p_id) from patient) as p_id, (select n_id from nurse order by Rand() limit 1) as n_id