如何從此MySQL查詢中的第三個表中獲取信息？

Question

TABLE appointment (AppointmentNumber, ApptDate, PatientNumber, DentistID) 

TABLE patientstable PatientNumber, PatientForename, PatientSurname, DentistID 

TABLE dentists DentistID, DentistForename, DentistSurname 

我運行這個

SELECT appointment.AppointmentNumber, appointment.ApptDate, 
patientstable.PatientForename, patientstable.PatientSurname 
FROM patientstable 
INNER JOIN appointment ON (patientstable.PatientNumber=appointment.PatientNumber) 

這讓我對每個約會的日期，患者姓名細節。

我想顯示與每個約會相關的DentistForenam e和DentistSurname，但我不知道如何操作。

Answer 1

所有你需要的是另一種加入到牙醫表是這樣的：

SELECT appointment.AppointmentNumber, 
     appointment.ApptDate, 
     patientstable.PatientForename, 
     patientstable.PatientSurname, 
     dentist.DentistForename, 
     dentist.DentistSurname 
FROM patientstable 
INNER JOIN appointment 
ON patientstable.PatientNumber=appointment.PatientNumber 
INNER JOIN dentists 
ON(appointment.DentistID = dentist.DentistID) 

Answer 2

SELECT appointment.AppointmentNumber，appointment.ApptDate，patientstable.PatientForename，patientstable.PatientSurname FROM patientstable INNER JOIN任命 ON patientstable。 PatientNumber = appointment.PatientNumber 內部加入牙醫 對patientstable.dentistsid = dentists.dentistsid

加入另一個Tbale以獲取D列entists表