SQL Quest › SQL Interview Questions › Subqueries & CTEs
Simple Subquery: Above Average
Find employees who earn more than the company-wide average salary. Show name, department, salary, and above_avg_by (how much above the average, rounded to nearest dollar). Sort by above_avg_by descending, then name ascending for ties. The subquery calculates the average once, then the outer query uses it.
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Schema
employees
| emp_id | name | department | position | salary | hire_date | manager_id | performance_rating |
|---|---|---|---|---|---|---|---|
| 1 | Alice Johnson | Engineering | Senior Developer | 95000 | 2019-03-15 | 5 | 4.5 |
| 2 | Bob Smith | Engineering | Developer | 75000 | 2020-06-01 | 1 | 3.8 |
| 3 | Carol Williams | Marketing | Marketing Manager | 85000 | 2018-09-20 | NULL | 4.2 |
Expected output: Alice appears with above_avg_by: $23000
Hint
Concepts
SELECT Subquery WHERE
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