Sure, I thought. Easy. I wrote a simple SQL query… and hit a wall. It gave me just the first level of subcategories. And that's when I pulled out the hidden gem in SQL's toolkit — Recursive SQL.

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 ...

Nobody taught me this SQL hack 😐 Recursive CTE - one of the most powerful SQL concepts. Most engineers have never written one. Here is everything you need to know ↓ → What is Recursive CTE? • CTE ...

How to Use Recursive Functions (Recursive CTEs) in SQL 1. What is Recursive SQL? Recursive SQL (a recursive query using a Common Table Expression: CTE) is an SQL technique that retrieves data by ...

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 ...