A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

For each department, compute the ratio of senior employees (fiscal year before 2021) to junior employees (fiscal year 2026 or later). Show the department, senior count, junior count, and the ratio.

Summary

The ratio tells you a lot about the department.

Practice This Problem

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