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Interview questions · medium
Demonstrate the difference between DENSE_RANK() and RANK()
Write a query to find the top three highest-paid employees in each department using window functions.
Can you provide an example of a time when you went above and beyond for a project?
How do you manage data storage in AWS?
How would you optimize cost when using AWS for large-scale data processing?
How would you optimize a slow-running SQL query?
Can you describe a project where you handled large volumes of data?
Demonstrate how to use a LEFT JOIN to combine data from two tables and handle null values.
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