Yes indeed you can. Any individual switched fitting can be used on a mains wall switch connection. You can use the light fitting by switching on and off and either switch which is especially handy for bedside lights.
Alternatively, if it is a light fitting you like but don't need the switched function, then simply leave the switch to 'on' and operate from the mains switch. Pull cord switches can also be easily removed by electricians if you wish to only operate the mains switch.