🎓 LeetCode SQL: Count Unique Subjects per Teacher | Master COUNT(DISTINCT) & GROUP BY

🚀 SQL Interview Prep – Problem #23 of 50!

In this video, we solve the "Number of Unique Subjects Taught by Each Teacher" problem from LeetCode, the 23rd question in our 50 SQL problem series. This problem is essential for mastering data grouping and unique counting in SQL.

🔍 What This Problem Will Teach You:
✅ Using COUNT(DISTINCT column) to count unique values
✅ Grouping data effectively with GROUP BY

📌 LeetCode Problem Link: https://leetcode.com/problems/number-of-unique-subjects-taught-by-each-teacher

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