NTILE Salary Quartiles

Divide employees into four salary quartiles with NTILE(4), then return each employee's name, salary, and quartile. Return columns: first_name, salary, quartile. Order results by: salary DESC.

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Challenge overview

What you will practice

Divide employees into four salary quartiles with NTILE(4), then return each employee's name, salary, and quartile. Return columns: first_name, salary, quartile. Order results by: salary DESC.

Difficulty: Advanced
SQL concept: Window Functions