命令未正确结束错误

Question

我能知道是什么原因让我得到错误的命令没有正确结束，因为我不确定代码中的错误

//calculating number of seats 
$sqld="SELECT COUNT(sno) as seatAvialable FROM date WHERE date='$date' AND tcode='$tcode'";
$queryd=mysql_query($sqld);
$resultd=mysql_fetch_assoc($queryd);
if ($resultd['seatAvialable']>=44)
    echo "No Available Seats left";
else
    echo "seats Available= ".$queryd;

Answer 1

Oracle不支持JOIN子句中的DELETE。因此，在DELETE中使用JOIN是您的查询的问题。

您需要更改查询以改为使用IN或EXISTS。

您可以使用以下查询 -

使用IN -

 DELETE 
   FROM usernamepassword WHERE username IN 
   (SELECT email_address FROM faculty_admininfo 
    WHERE employee_id IN ('SCM-021232'));

使用EXISTS -

DELETE 
   FROM usernamepassword unpwd WHERE EXISTS 
   (SELECT 1 FROM faculty_admininfo info
    WHERE info.email_address = unpwd.username 
    AND info.employee_id IN ('SCM-021232'));