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Window functions from sql*
What happened, did you get call
You can concentrate mostly on windows functions in sales and lists/dictionary for python based on my interview experience. But again it may vary person to person
Great advice from Tiger Analytics! For senior data engineer roles, focus on system design questions too - how you'd architect data pipelines, handle scale, and ensure data quality. Practice explaining your thought process clearly and prepare examples of complex projects you've delivered. Review Python data manipulation (pandas, numpy) and advanced SQL concepts beyond window functions. Most importantly, stay confident and show your passion for data engineering! Good luck - you've got this! 🚀