PDO选择从2个表

Question

加入

所以我有工作的查询，但我想添加一个功能是用户可以“暂停”

$stmt212 = $db->prepare('SELECT * 
FROM websites w 
    LEFT JOIN users u ON u.username = w.owner 
WHERE u.coins >= ? 
ORDER BY RAND() 
LIMIT 1'); 
$stmt212->execute(array('1')) ; 
$row212 = $stmt212->fetch(); 

这工作，但现在我需要从网站选择了直播= 1有好有超过1硬币在user表中也尝试这种

$stmt212 = $db->prepare('SELECT * 
FROM websites WHERE live = ? 
    LEFT JOIN users u ON u.username = w.owner 
WHERE u.coins >= ? 
ORDER BY RAND() 
LIMIT 1'); 
$stmt212->execute(array('1','1')) ; 
$row212 = $stmt212->fetch(); 

但没有工作

Answer 1

试试这个：

$stmt212 = $db->prepare('SELECT * 
FROM websites 
LEFT JOIN users u ON u.username = w.owner 
WHERE u.coins >= ? 
AND live = ? 
ORDER BY RAND() 
LIMIT 1'); 

$stmt212->execute(array('1','1')) ; 
$row212 = $stmt212->fetch();