How to show data only his data while he login

Hi everyone, 
The condition is employee login by using email as username, and after login all employess data are shown in the table. But the condition  i want is this: when an employee login, he only could see his data only.

The condition now is :

    $this->datatables->select('id_users,full_name,email,address,images,salary');
   $this->datatables->from('tbl_user');

It will show up all data,,so i modified it by adding this line


    $this->datatables->select('id_users,full_name,email,address,images,salary');
   $this->datatables->from('tbl_user');
   $this->datatables->where('email=".$this->session->email."');
But no data shown up in the table, how to fix this? 

I am sorry , i already google but still confuse, i think this is about getting record by session, any help will be very usefull since  i am a beginner, thanks.