Narrow and wide transformation in Spark
Data Engineer Interview Questions
20,169 data engineer 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?
What was the roles of your previous project?
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