SQL内部连接与3个表？

我试图在一个视图中连接3个表；情况如下：

我有一张表格，里面有申请住在这个大学校园的学生的信息。我有另一个表格，列出了每个学生的大厅偏好（其中3个）。但是这些首选项中的每一个都只是一个ID号，ID号在第三个表中有一个对应的大厅名称（没有设计这个数据库…）

基本上，我在表中有

内部连接
以及它们的首选项和信息，结果类似于

 John Doe | 923423 | Incoming Student | 005

其中
005
将是
HallID
。现在我想把这个
HallID
匹配到第三个表，其中这个表包含
HallID
和
HallName

所以我希望我的结果是

 John Doe | 923423 | Incoming Student | Foley Hall <---(INSTEAD OF 005)

如果要加入3个具有相同
ID
的表，我认为应该是这样的：

SELECT * FROM table1 a
JOIN table2 b ON a.ID = b.ID
JOIN table3 c ON a.ID = c.ID

只需将
*
替换为您希望从表中获得的内容。
您只需要第二个内部联接，将您现在拥有的
ID号
链接到第三个表的
ID号
。然后，将
ID编号
替换为
门厅名称
和voilá：）
您可以执行以下操作（我在表字段等上猜测）

根据您对多个大厅的要求，您可以这样做。您只需为每个房间的pref id在大厅桌子上加入多次即可：

SELECT     s.StudentID
    , s.FName
    , s.LName
    , s.Gender
    , s.BirthDate
    , s.Email
    , r.HallPref1
    , h1.hallName as Pref1HallName
    , r.HallPref2 
    , h2.hallName as Pref2HallName
    , r.HallPref3
    , h3.hallName as Pref3HallName
FROM  dbo.StudentSignUp AS s 
INNER JOIN RoomSignUp.dbo.Incoming_Applications_Current AS r 
    ON s.StudentID = r.StudentID 
INNER JOIN HallData.dbo.Halls AS h1 
    ON r.HallPref1 = h1.HallID
INNER JOIN HallData.dbo.Halls AS h2
    ON r.HallPref2 = h2.HallID
INNER JOIN HallData.dbo.Halls AS h3
    ON r.HallPref3 = h3.HallID

这是对具有相同id的join 3表的正确查询**

select a.empname,a.empsalary,b.workstatus,b.bonus,c.dateofbirth from employee a, Report b,birth c where a.empid=b.empid and a.empid=c.empid and b.empid='103';

员工第一张表。
报告第二个表。
出生第三个表
此查询适用于您

select empid,empname,managename,[Management ],cityname  
from employees inner join Managment  
on employees.manageid = Managment.ManageId     
inner join CITY on employees.Cityid=CITY.CityId


id name  managename  managment  cityname
----------------------------------------
1  islam   hamza       it        cairo

Select b.id as 'id', u.id as 'freelancer_id', u.name as 
'free_lancer_name', p.user_id as 'project_owner', b.price as 
'bid_price', b.number_of_days as 'days' from User u, Project p, Bid b 
where b.user_id = u.id and b.project_id = p.id

已经有很多回应，但总的教训似乎是您可以在where子句中使用多个连接；此外，techonthenet.com（我的老板向我推荐了它，我就是这样发现的）有很好的SQL教程，如果你有其他问题，你只想尝试解决它

SELECT table1.column1
FROM table1
WHERE table1 > 0 (or whatever you want to specify)
INNER JOIN table1 
ON table1.column1 = table2.column1

这只适用于一个首选项，但我想如何编辑它以使其适用于3个首选项？（每个首选项对应一列）@Bobsands刚刚更新了我的答案，如果你不想要HallPref号码，请删除这些列。该答案缺乏合理的解释，无法向OP展示如何实现最初的目标。
select empid,empname,managename,[Management ],cityname  
from employees inner join Managment  
on employees.manageid = Managment.ManageId     
inner join CITY on employees.Cityid=CITY.CityId


id name  managename  managment  cityname
----------------------------------------
1  islam   hamza       it        cairo

SELECT table1.col,table2.col,table3.col 
FROM table1 
INNER JOIN 
(table2 INNER JOIN table3 
ON table3.id=table2.id) 
ON table1.id(f-key)=table2.id
AND //add any additional filters HERE

SELECT * 
FROM 
    PersonAddress a, 
    Person b,
    PersonAdmin c
WHERE a.addressid LIKE '97%' 
    AND b.lastname LIKE 'test%'
    AND b.genderid IS NOT NULL
    AND a.partyid = c.partyid 
    AND b.partyid = c.partyid;

SELECT 
A.P_NAME AS [INDIVIDUAL NAME],B.F_DETAIL AS [INDIVIDUAL FEATURE],C.PL_PLACE AS [INDIVIDUAL LOCATION]
FROM 
[dbo].[PEOPLE] A
INNER JOIN 
[dbo].[FEATURE] B ON A.P_FEATURE = B.F_ID
INNER JOIN 
[dbo].[PEOPLE_LOCATION] C ON A.P_LOCATION = C.PL_ID

Select b.id as 'id', u.id as 'freelancer_id', u.name as 
'free_lancer_name', p.user_id as 'project_owner', b.price as 
'bid_price', b.number_of_days as 'days' from User u, Project p, Bid b 
where b.user_id = u.id and b.project_id = p.id

SELECT table1.column1
FROM table1
WHERE table1 > 0 (or whatever you want to specify)
INNER JOIN table1 
ON table1.column1 = table2.column1

select products.product_id, product_name, price, created_at, image_name, categories.category_id, category_name,brands.brand_id, brand_name 
FROM products INNER JOIN categories USING (category_id) INNER JOIN brands USING(brand_id)