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Second Highest Salary
A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- junior
Problem
HR is setting the salary band for a new role and needs the second-highest unique salary on record as a benchmark. If all employees share the same salary, return NULL.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.