Easy way to delete multiple rows in a single querie?

I have some code that deletes records from the database, in a loop.

However its prety inificient as it makes a seperate database call in every loop whcih is slow.

	for ($i=0; $i<count($idarray); $i++) 
          db_query("delete from clicks where id='$idarray[$i]'");

Is their a more efficient way of doing that? It is posible to delete multiple records in the same database querie?

//You can create a string of the IDs to remove first
$string = implode("," , $idarray)

//then use the sql
db_query("delete from clicks where id in('$string')");

I left the ' around $string, you will need to take them out

db_query("delete from clicks where id in($string)");

instead of
db_query("delete from clicks where id in('$string')");