How to use COUNT DISTINCT in SQL! (LeetCode 2356) #Shorts
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YouTubeDataHead Girl
How to use COUNT DISTINCT in SQL! (LeetCode 2356) #Shorts
Let's solve LeetCode 2356: Number of Unique Subjects Taught by Each Teacher using MS SQL! This is a must-know problem for Data Analyst and Data Engineering interviews. We'll use the GROUP BY clause and COUNT(DISTINCT) to find exactly how many unique subjects each professor teaches. Drop a comment if you want to see the Python Pandas solution ...
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