Php 如何连接下表

我有三张桌子：

--------
| test |
--------
| id   | 
--------

-----------------------
| testconnection      |
-----------------------
| testid | pharmacyid |
-----------------------

-----------------------------------
| testcontent                     |
-----------------------------------
| id | testID | title | shortened |
-----------------------------------

我需要将

testcontent的

标题

和

缩写

与

testconnection

链接，以便

pharmacyid

字段与我当前的药房循环相链接

下面是它现在的样子：

$sql = mysql_query("SELECT * FROM pharmacies");
while($pharmacy = mysql_fetch_array($sql)) {

  and here i'd like to access testcontent's title and shortened for this particular pharmacy

}

---

应该是这样的：

SELECT cont.title, cont.shortened 
FROM testcontent cont
JOIN testconnection conn
ON cont.testId = conn.testId

或

试试看

---

我希望它能起作用。

您使用的是MS SQL Server还是/和MySQL？@jarlh我使用的是MySQL谢谢您的尝试，但这根本不会返回任何结果

SELECT *, cont.title, cont.shortened 
FROM pharmacies p
JOIN testconnection conn
ON conn.pharmacyid = p.Id
JOIN testcontent cont
ON cont.testId = conn.testId

SELECT pharmacies.*,
(select title from testcontent where testcontent.testID = testconnection.testid limit 1) as title,
(select shortened from testcontent where testcontent.testID = testconnection.testid limit 1) as shortened  
FROM pharmacies 
left join testconnection on testconnection.pharmacyid = pharmacies.id 
order by pharmacies.id