331. JOIN with Subquery

Hard Deloitte Joins

Query Rules

The query columns and order must match the expected result schema.
NULL values should be handled appropriately where applicable.
The grader compares output values and sorting order to evaluate.

Schema Browser

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locations

3 cols

departments

3 cols

employees

6 cols

orders

6 cols

Reference Solution

Expected SQL

SELECT * FROM employees e JOIN (SELECT dept_id, AVG(salary) avg_sal FROM employees GROUP BY dept_id) d ON e.dept_id = d.dept_id WHERE e.salary > d.avg_sal;

SQL Editor

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Console Output

Console Terminal

Write your query and click "Run Query" (Ctrl + Enter) to see results and testcase validation.