Problem
When would you choose the PySpark DataFrame API over raw Spark SQL, and what are the performance implications of each for Plangrid ETL?
Practicing as: Data Engineer interview at PlangridHi, I'll play your Plangrid interviewer for the Data Engineer role. Candidates describe these interviews as mixed and moderately difficult, so expect me to be professional and fair. Take your time with the question above and answer like we're in the room.
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