SQL Server多个LEFT JOIN，一对多

Question

我正在寻找一种方法来执行从一个源表到多个表的多个连接。类似以下内容：

SELECT a.NAME, b.address, c.phone 
FROM tblname a 
LEFT JOIN tbladdress b ON a.nid = b.nid 

我也想执行左键的同时加入对电话表tblPhone：

tblname a left join tblPhone c on a.PID = c.PID 

尝试，因为我可能，我不能看到如何把这个到一个查询中。

Answer 1

你可以简单地重复你JOIN条款多次是必要的，例如：

SELECT a.NAME 
    ,b.address 
    ,c.phone 
FROM tblname a 
LEFT JOIN tbladdress b ON a.nid = b.nid 
LEFT JOIN tblPhone c ON a.PID = c.PID 

Answer 2

SELECT a.name, b.address, c.phone 
FROM tblname a 
left join tbladdress b on a.nid = b.nid 
left join tblPhone c on a.PID = c.PID; 

Answer 3

SELECT a.name, b.address, c.phone 
FROM (tblname a 
    left join tbladdress b on a.nid = b.nid) c 
left join tblPhone d on c.PID=d.PID