SQL中同一个表中的多个INNER JOIN

Question

如何从同一张表中制作多个INNER JOIN？

我试过了：

SELECT * FROM ___Bookings 
INNER JOIN ___Rooms  ON ___Bookings.BOO_RoomId=___Rooms.ROO_Id 
INNER JOIN ___Kardex AS ka ON ___Bookings.BOO_ClientId=ka.___Kardex.KDX_Id 
INNER JOIN ___Kardex AS kb ON ___Bookings.BOO_BillingId=kb.___Kardex.KDX_Id 
WHERE BOO_Id=224

错误讯息：

1054 - 未知栏＆＃39; ka .___ Kardex.KDX_Id＆＃39;在＆＃39; on子句＆＃39;

感谢您的帮助。

Answer 1

ka.___Kardex.KDX_Id？

你的意思是

ka.KDX_Id

SELECT * FROM ___Bookings 
INNER JOIN ___Rooms  ON ___Bookings.BOO_RoomId=___Rooms.ROO_Id 
INNER JOIN ___Kardex AS ka ON ___Bookings.BOO_ClientId=ka.KDX_Id 
INNER JOIN ___Kardex AS kb ON ___Bookings.BOO_BillingId=kb.KDX_Id 
WHERE BOO_Id=224