📊 LeetCode SQL: Monthly Transactions I | Master GROUP BY, COUNT, SUM & CASE WHEN!

🚀 Want to ace SQL interviews? In this video, we solve the "Monthly Transactions I" problem from LeetCode, a key question that helps you master SQL aggregation and conditional logic.

This problem is perfect for improving your skills in data analysis, financial reporting, and database management. You'll learn how to extract meaningful insights from transactional data efficiently.

🔍 What This Problem Will Teach You:
✅ Extracting month & year from a date using DATE_FORMAT()
✅ Counting transactions with COUNT(*)
✅ Summing conditional values using SUM(CASE WHEN condition THEN value ELSE 0 END)
✅ Filtering approved transactions using SUM(state = 'approved') as a shorthand
✅ Grouping data by multiple columns with GROUP BY

📌 LeetCode Problem Link: https://leetcode.com/problems/monthly-transactions-i

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