SQL Tutorial: Calculate Daily Active Users (30-Day Period Query) | Geeky Codes
In this video, we dive into a common SQL interview question – calculating daily active users from an Activity table using SQL. You'll learn how to write an efficient query to extract daily user engagement over a 30-day period ending on a specific date.
Whether you're preparing for SQL interviews or brushing up on your SQL analytics skills, this walkthrough will help you understand: ✅ Filtering data using BETWEEN
✅ Grouping data by activity_date
✅ Using COUNT(DISTINCT user_id) for accurate metrics
✅ Real-world use cases in product analytics and dashboards
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🧩 Related Topics Covered:
SQL Aggregate Functions
SQL GROUP BY
SQL Interview Prep
LeetCode SQL Solutions
SQL for Data Analysts
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#SQL #LeetCodeSQL #GeekyCodes #SQLTutorial #DailyActiveUsers #SQLInterview #DataAnalytics #SQLForBeginners #LearnSQL #DataScience