PDO多個內部聯接似乎正在循環

Question

我是第一次使用INNER JOIN ，我有點困惑。

我有3張桌子：

dog
client
dogclient

我想從兩個信息client和dog在每一個記錄表dogclient表。 當我這樣做時，結果是這樣的：

[{"ID":"1","Name":"Sparky","Forename":"Jamie","Surname":"McAllister"},
{"ID":"1","Name":"Sparky","Forename":"Jamie","Surname":"McAllister"},
{"ID":"2","Name":"Scruff","Forename":"Jamie","Surname":"McAllister"},
{"ID":"2","Name":"Scruff","Forename":"Jamie","Surname":"McAllister"}]

我用來進行此查詢的函數是：

function getAll(){

    $conn = self::connect();

    $stmt = $conn->prepare("SELECT dog.ID, dog.Name, client.Forename, client.Surname FROM dogclient INNER JOIN client ON dogClient.ClientID INNER JOIN dog ON dogclient.DogID"); 
    $stmt->execute();

    // set the resulting array to associative
    $result = $stmt->setFetchMode(PDO::FETCH_ASSOC); 
    $response = $stmt->fetchAll();

    return $response;

誰能看到我哪里出問題了？

或者，有人知道更好的方法嗎？

如果有幫助的話， dog表中只有2條狗， client表中只有1個客戶client ，而dogclient表中dogclient 2條記錄，所以我期望有2條結果

Answer 1

嘗試這個：

INNER JOIN client ON dogClient.ClientID = client.ClientID INNER JOIN dog ON dogclient.DogID = dog.DogID