SQL連接問題 - 味精4145

Question

我有以下代碼：

SELECT * 
From [CMM].[dbo].[schedule] S 
    join [CMM].[dbo].[schedule_activity] SA 
     ON S.[schedule_id = SA.schedule_id 
    join [CMM].[dbo].[schedule_activity_part] SAP 
    ON SA.schedule_activity_id = SAP.schedule_activity_id 
    join [CMM].[dbo].[activity] A 
    ON SA.activity_id = A.activity_id 
Where S.schedule_id = '5106' 

而且我收到此錯誤：

Msg 4145, Level 15, State 1, Line 6
An expression of non-boolean type specified in a context where a condition is expected, near 'SAP'.

Answer 1

第四行是錯誤的，或者至少有一個錯字： ON S.[schedule_id = SA.schedule_id 有一個[太多