recursive_cte_hierarchical_queries

🌀 Recursive Hierarchical Queries

Enable deep hierarchical querying using SQLite's recursive CTEs to navigate parent‑child relationships efficiently. This approach avoids multiple round trips and leverages built‑in optimization for self‑referential data.

WITH RECURSIVE hierarchy(employee_id, name, level) AS (
  SELECT id, name, 0
    FROM employees
   WHERE manager_id IS NULL
  UNION ALL
  SELECT e.id, e.name, h.level + 1
    FROM employees AS e
    JOIN hierarchy AS h ON e.manager_id = h.employee_id
)
SELECT *
  FROM hierarchy;

🌀 Recursive Hierarchical Queries​

🌀 Recursive Hierarchical Queries