Write SQL for rankings, state, and aggregations

Q: How do I practice SQL interview questions?

PracHub provides an interactive SQL console where you can write and test queries against real database schemas. Get instant feedback and compare your solution with the expected output.

Q: What difficulty level is this coding question?

This is a easy difficulty Data Manipulation (SQL/Python) question, commonly asked during Technical Screen rounds at LinkedIn.

Q: What role is this question designed for?

This question is commonly asked for Data Scientist candidates at LinkedIn during technical interviews.

Question

Write SQL for rankings, state, and aggregations

PracHub · Accepted Answer

This question evaluates a candidate's competency in SQL data manipulation, covering ranking/top-N queries, aggregations and percentage calculations, temporal state reconstruction from action logs, and detection of first-occurrence events.

Quick Overview

Write SQL for rankings, state, and aggregations