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Interview questions
Describe a challenging project where you optimized a complex ETL process.
Describe a scenario where you would use a CROSS JOIN vs. an INNER JOIN.
Explain indexing and its impact on database performance.
Explain your approach to optimizing a slow-running query on a table with billions of rows.
Given a complex nested query, how would you refactor it for better readability and efficiency?
How would you decide between using a CTE and a temporary table for a complex query?
Identify and remove duplicate records from a table, keeping the most recent record based on a timestamp column.
Share an example where you had to communicate technical concepts to a non-technical audience.
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