4819. Hierarchical Employee Management Tree CTE Query (Part 45)
NoSQL & SchemaWindow Functions
### Problem #4819: Hierarchical Employee Management Tree CTE Query (Part 45)
**Domain:** `SQL & Databases` | **Topic Focus:** `NoSQL & Schema, Window Functions`
Implement an optimized, production-grade solution for **Hierarchical Employee Management Tree CTE Query (Part 45)**.
### Requirements:
1. Your code must handle boundary inputs, edge cases, and maintain optimal time & space complexity.
2. In production, this logic scales to high-throughput environments.
3. Return the exact computed result.
Example 1:
Input: Sample Input #4819
Output: Output 1
Explanation: Demonstrates correct execution for NoSQL & Schema in SQL & Databases.
Constraints:
- Time Complexity: Optimal for standard production loads.
- Space Complexity: O(1) auxiliary or O(N) linear storage.
- Ensure memory safety, clean error propagation, and zero race conditions.