Preparing Practice Exam…
Please wait a moment while the system generates the exam questions, answers, and study session.
Please wait a moment while the system generates the exam questions, answers, and study session.
Databricks Certified Data Engineer Associate · Databricks
Select one answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
- explode() takes a column containing arrays and creates a new row for each element in the array. groupBy() aggregates rows, pivot() rotates data from rows to columns, and join() combines DataFrames. explode() and explode_outer() are essential for working with nested/variant data.