The Shape of a Day

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

Capacity planning wants the shape of an average day: for each hour of the clock, how many API calls land in a typical day. Return every hour with that average daily call count, busiest first.

Summary

Traffic has a rhythm across the hours. Find where it runs busiest.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.