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Questions tagged sql · medium
What is broadcasting in Spark, and why is it used? Can you give an example of its use?
When and how do you use Broadcast Join?
Write a Python script to find the count of each word in a text file using Spark.
Write the PySpark code to find the second highest salary in each department.
Explain how AWS Glue interacts with on-premises SQL databases to extract data efficiently.
APPLY Operator - CROSS APPLY and OUTER APPLY
Calculate a 7-day moving average of clicks for each user_id
Calculate a 7-day moving average of orders for each city in the Swiggy database.
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