Count Recent High-Volume Call Users

Quick Overview

This question evaluates SQL data manipulation and analytical querying skills, including time-window filtering, joins between user and call tables, role-aware event counting (caller vs recipient), distinct user aggregation, and cohort percentage calculations.

Count Recent High-Volume Call Users

Company: Meta

Role: Data Scientist

Category: Data Manipulation (SQL/Python)

Difficulty: medium

Interview Round: Technical Screen

Overview: This question evaluates SQL data manipulation and analytical querying skills, including time-window filtering, joins between user and call tables, role-aware event counting (caller vs recipient), distinct user aggregation, and cohort percentage calculations.

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Mar 14, 2026
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