in order to help me to help u solve the problem
please DESC cart in mysql console, copy it and paste it in this thread
or u can trouble shot yourself
method a:
enter the mysql console
type the SQL statement (which we changed already) directly
and see whether the assume affected row updated successfully or not.
method b:
if the SQL statement can be updated successfully in the console mode of mysql, this mean something wrong with your script,
most probably is that
$qty, $itemid,$size and $color don't have value.
i read ur first post in this thread, i suppose $size and $color don't have value.
please check ur size and color columns, maybe u already set the columns to have a default value set up.