cannot bind LIMIT value within table result set of a statement - mysql

Question

I have the following which returns all users...from all computers... of a specific user account. Works great, BUT I want to have a ORDER BY computers.computer_id ASC LIMIT 0, ? on the computers table.
I'm fairly new to joins, but have picked it up pretty quickly in the last day or so, but not sure about specific conditions on a table when joins are involved.
The idea is say there are 20 computers in the account... I limit that to only the first 10, for example, in asc order by its computer_id... which in turn would only left join the users for those 10 computers and then left join the account on that.
$stmt = $db->prepare("
SELECT users.*
FROM computers
LEFT JOIN users
on users.computer_id = computers.computer_id
LEFT JOIN accounts
on accounts.account_id = computers.account_id
WHERE accounts.account_id = ?
");
$stmt->execute(array($_SESSION['user']['account_id'], **limit value goes here**));
// return array
$array = $stmt->fetchAll(PDO::FETCH_ASSOC);
EDIT:
In response to Ollie's answer below... I guess I am doing something wrong here because while it does not produce any errors it also produces no result.
$stmt = $db->prepare("
SELECT users.*
FROM (
SELECT * FROM computers ORDER BY computer_id ASC LIMIT 0, ?
) as c
LEFT JOIN users
on users.computer_id = c.computer_id
LEFT JOIN accounts
on accounts.account_id = c.account_id
WHERE accounts.account_id = ?
");
$stmt->execute(array($_SESSION['user']['account_id'], $_SESSION['user']['licenses']));
// return array
$array = $stmt->fetchAll(PDO::FETCH_ASSOC);
Bind values are fine and there is data to be returned as confirmed by my original statement ... so it is something with the statement itself.
The problem :
I've narrowed this down to the LIMIT... if I manually enter LIMIT 0,
whatever in the statement it works. If I enter LIMIT 0, ? where I bind the value it returns null. Any ideas?

Answer 1

The knack you need is this:
Anywhere you can say table in SELECT ... FROM table AS t you can also say
SELECT ...
FROM (
/* some valid query */
) AS t
So you need
SELECT ...
FROM (
SELECT * FROM computers ORDER BY computer_id ASC LIMIT 0,?
) AS t
LEFT JOIN (whatever)
That is, you can either name a physical table, or a virtual table (the result set of a query) anywhere you name a table.
That's why Structured Query Language is called Structured.