Mysqli查询内部连接错误

Question

这个查询有什么问题

$yourfriendsbud = mysqli_query($con, "SELECT avatar,firstname,lastname,id
FROM people 
INNER JOIN friends
ON 
people.id=friends.zatrazio_id
WHERE status=0 AND dobio_id='$user_id' LIMIT 50");
while($row = mysqli_fetch_array($yourfriendsbud))

报告错误：

  

警告：mysqli_fetch_array（）要求参数1为mysqli_result，第64行/home/u573639388/public_html/menu.php中给出布尔值

第64行是

while($row = mysqli_fetch_array($yourfriendsbud))

Answer 1

这意味着您在两个表中都有一个id列。你必须在SELECT中更具体，使用SELECT people.id，avatar，firstname ...