Question

I’m using Update videos Set views = views + 1 Where video_id='$id', but MySQL give me back error 1064:

You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use
near ‘ 8’ at line 1

What can cause it?

Answer 1

Most likely $id is not what you expect it is. I imagine the query that is coming through looks something like

update videos set view = views + 1 where video='' 8'';

Note: Those are two single quotes on either side of the 8.

To confirm this you have a couple options.

• Turn on general query logging, as a super user (root) from the mysql command prompt run

  set general_log_file=’/tmp/mysql.log’;
  set general_log =’on’;

Now every single query that gets sent to mysql will show up in /tmp/mysql.log (Note this can quickly grow very large so don’t leave it on after you’re done debugging).

• App logs

Do you have any kind of logging frame work going on? Before your actual call to execute the query, log the value of ($id). For a poor mans logging you could do something like

file_put_contents(‘/tmp/debug.txt’, date(“Y-m-d H:i:s”).” id is [$id]\n”,FILE_APPEND);