If you are a SQL programmer, learning recursive SQL techniques can be a boon to your productivity. A recursive query is one that refers to itself. I think the best way to quickly grasp the concept of ...

cast('' as varchar) as employee_lvl_2, cast('' as varchar) as employee_lvl_3, cast('' as varchar) as employee_lvl_4 select e.employee_number, e.employee_name, e ...