SQL FOUNDATIONS:SQL Interview Questions (Company-wise)
Solve high-frequency interview SQL problems across companies.
SQL Interview Questions (Company-wise)
Why This Chapter
These are common SQL interview patterns asked across companies. Practicing them helps you:
- Build speed and confidence
- Recognize common SQL patterns
- Solve real-world query problems quickly
Topics Covered
- Top-N queries
- Aggregations with GROUP BY
- Filtering and sorting
- Subqueries
- Ranking and window functions
Example Dataset
Table: employees
Tips for Interviews
- Start with a simple SELECT
- Add filters one at a time
- Use ORDER BY + LIMIT for top results
- Use GROUP BY for category insights
- Use subqueries for comparisons
Practice CTA
Practice these questions to become interview-ready in SQL.
SQL Interview Questions (Company-wise) Missions
Solve exercises in sequence to unlock the next mission.
1
2
Second highest salary
Find the second highest salary.
Locked
3
Top 3 salaries
List top 3 highest-paid employees.
Locked
4
Count per department
Count employees in each department.
Locked
5
Highest salary per department
Find highest salary in each department.
Locked
6
Departments with avg > 55000
Find departments with average salary greater than 55000.
Locked
7
Above average salary
Find employees earning above average salary.
Locked
8
IT employees sorted
List IT employees sorted by salary descending.
Locked
9
Top 2 per department
Find top 2 employees in each department.
Locked
10
Finance highest salary
Find highest paid employee in Finance.
Locked