MySQL連接和關聯數組？

Question

我試圖做一個MySQL的加入，像這樣，

$q = $dbc -> prepare("SELECT m.* a.username FROM mailbox m JOIN accounts a (m.msgFrom = a.id) WHERE msgTo = ? AND sent = '0'"); 
$q -> execute(array($user['id'])); 
while ($msg = $q -> fetch(PDO::FETCH_ASSOC)) { 
    echo $msg['username']; 
} 

我想從表帳戶拉動用戶的用戶名，而不是僅僅顯示從表郵箱的ID，我得到的陣列進行while循環查詢，

雖然這似乎不工作，任何想法？

Answer 1

您在連接條件忘了on試試這個：

SELECT m.*, a.username 
FROM mailbox m JOIN accounts a on (m.msgFrom = a.id) 
WHERE msgTo = ? AND sent = '0'