如何显示患者预约中的专业人士姓名？

Question

我有 this 四张表：

一个给用户，另一个给专业人士，另一个给病人，另一个给预约。我想从病人的预约中得到专家的名字。

我试试这个：

SELECT appointments.date, appointments.start_time, appointments.indication, professionals.medical_box 
FROM appointments 
INNER JOIN patients ON appointments.id_patient = patients.id 
INNER JOIN users ON users.id = patients.id_user 
INNER JOIN professionals ON professionals.id = appointments.id_professional 
WHERE users.id = 14 
ORDER BY appointments.date DESC, appointments.start_time ASC

我得到的都是正确的，但是当我尝试显示 users.name 时，我得到的名字是病人的名字，不是专业的名字，我想要那个病人预约的专业名字。 sql 查询是什么？

Answer 1

看来要获取您需要的专业名称，还要将用户 table 加入专业。

为第二次加入用户添加一个别名 table 并在显示您的字段时引用它。

SELECT appointments.date, appointments.start_time, appointments.indication, professionals.medical_box, usersProf .name
FROM appointments 
INNER JOIN patients ON appointments.id_patient = patients.id 
INNER JOIN users ON users.id = patients.id_user 
INNER JOIN professionals ON professionals.id = appointments.id_professional 
INNER JOIN users as usersProf ON usersProf .id = professionals.id_user 
WHERE users.id = 14 
ORDER BY appointments.date DESC, appointments.start_time ASC

如何显示患者预约中的专业人士姓名？

how can i display the name of a professional from a patient's appointment?

mysql