PySpark and AWS: Master Big Data with PySpark and AWS - Project (Group By)

This video tutorial explains how to group and count employees based on different criteria using data frames. It starts with grouping by department, showing how to identify unique elements and count employees in each department. The tutorial then moves on to grouping by state, replicating the process to count employees in each state. Finally, it combines both criteria, demonstrating how to group by state and department simultaneously to get a detailed count of employees. The video emphasizes the use of data frames and the group by function to perform these operations efficiently.

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