通過外鍵鏈接的三個表上的內部聯接

Question

我是SQL編程的新手，並且具有以下方案。 我有三個被鏈接到對方爲表 -

ForceInstance

ForceInstanceID (PK) 
ForceID (FK to Force) 
Description 
CreatedBy 
CreatedOn 

力

ForceID (PK) 
ForceTypeID (FK to ForceType) 
Description 
CreatedBy 
CreatedOn` 

ForceType指令

ForceTypeID (PK) 
Description 

我想打一個連接三個表的，我想這個查詢 -

Select * from ForceInstance FI inner join 
       Force F inner join 
       ForceType FT 
      on FI.ForceID = F.ForceID 
      and F.ForceTypeID = FT.ForceTypeID 

，但無法完成任何事。我是SQL新手，想知道如何實現這一點。

Answer 1

Select * from ForceInstance FI 
inner join Force F on FI.ForceID = F.ForceID 
inner join ForceType FT on F.ForceTypeID = FT.ForceTypeID 

Answer 2

SELECT * 
FROM  ForceInstance FI 
      INNER JOIN Force F 
       ON FI.ForceID = F.ForceID 
      INNER JOIN ForceType FT 
       ON F.ForceTypeID = FT.ForceTypeID 

Answer 3

Select * from ForceInstance FI join 
       Force F 
       on FI.ForceID = F.ForceID 
      JOIN ForceType FT   
       on F.ForceTypeID = FT.ForceTypeID