SQL Quest › SQL Interview Questions › Date Functions
Employee Tenure Bands
Classify employees into tenure bands based on years at the company (relative to 2024-06-01): 'Veteran' (8+ years), 'Experienced' (4–7), 'Mid-level' (2–3), 'Junior' (< 2 years). For each band show band, employee_count, and avg_salary (rounded to nearest dollar). Sort by avg_salary descending.
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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: 4 tenure bands with headcount and salary benchmarks
Hint
Concepts
SELECT Date Functions CASE CTE GROUP BY Aggregation Date Functions + CASE
Practise the topic: SQL practice questions · Date function practice · CASE WHEN practice · CTE practice · GROUP BY exercises
Read the concept: SQL running total
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