I had to be upfront that I never really used vlookup or xlookup.
Acknowledge your experience with Excel lookup functions, but pivot to how you apply similar concepts in software engineering, such as data retrieval and joining datasets. Emphasize your ability to choose the right tool for the job, considering performance and maintainability.
Pro tip: Mention that while Excel functions are useful for quick analysis, in production code you'd use SQL joins or in-memory data structures, showing you understand the trade-offs between ad-hoc tools and scalable solutions.
State that you have used VLOOKUP and XLOOKUP for data analysis and reporting tasks, highlighting XLOOKUP's advantages like default exact match and ability to search in any direction.
Explain how these functions are analogous to database joins or dictionary lookups in code, and that you understand the underlying algorithms and performance implications.
Compare VLOOKUP's limitations (e.g., only left-to-right search, approximate match default) with XLOOKUP's improvements, and how you'd choose based on context.
Mention that for large datasets or production systems, you'd use SQL, pandas, or custom code, and explain why Excel might not be suitable.
Give a brief example from your experience where you used Excel functions for quick analysis, but then implemented a more robust solution in code.
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