Narrow and wide transformation in Spark
Data Engineering Interview Questions
20,957 data engineering interview questions shared by candidates
Clustered vs Non-clustered index? Schema changes? Incremental loads?
What port does SSL communicate over. What is the difference between TCP & UDP.
1. Recursion 2.window function 3 difference between rank and row_number 4. sql with lead and lag function
Explain “Normal Distribution and its implementation
Comment optimiser une requête SQL pour améliorer les performances de la base de données ?
Take a look at a vague problem and right code, create test data and QA your program
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Give an example of a time you made/discovered a mistake and it would affect delivery. What did you do?
Technical test was easy. The dataset was small, so statistical analysis other than basic summary stats didn't make sense. It was not clear what they were looking for.
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