Given a Supervision table with employee\_id and manager\_id, write a query to detect if there is a cycle in the reporting hierarchy.

Given a Supervision table with employee\_id and manager\_id, write a query to detect if there is a cycle in the reporting hierarchy.

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: hard

标签: intellipaat, sql, topic-specific, sql, database

参考答案摘要

WITH RECURSIVE Hierarchy AS ( -- Base case SELECT employee_id, manager_id, CAST(employee_id AS VARCHAR(200)) AS path FROM Supervision UNION ALL -- Recursive step SELECT s.employee_id, s.manager_id, CO...

本题提供 STAR 原则详细解答和技术解析，登录匠人学院学习中心即可查看完整答案。