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Data Engineer Interview Questions
21,044 data engineer interview questions shared by candidates
How would you run multiple programs if threads are restricted by the python GIL
nothing difficult.
Can you describe a data pipeline you’ve built, the tools you used, and the business impact?
Write a function to parse a string make sure that it's a well formed JSON. Essentially matching the order of opening and closing enclosures (){}[]. Erroneous examples would have them out of order and opening without closing or closing without opening.
Correlated SQL queries, when would you use it and why? What executes first, inner or outer ?
2 python -> buy/sell I + needle/haystack 1 mysql -> nth highest salary without row_number/rank
What is the difference between DELETE and TRUNCATE?
There was a string parsing question via Python. Just know how to parse a string into words or even letters and to apply some sort of logic to the string.
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