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

idnamedepartmentsalary
1JohnHR40000
2AliceIT60000
3BobIT55000
4EmmaFinance70000
5DavidHR45000
6AnkitIT52000
7NehaFinance68000

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

Top paid employee

Find the employee with the highest salary.

Solve Mission
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