Certified Associate Developer for Apache Spark Exam

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Question 168

Which of the following operations can be used to rename and replace an existing column in a DataFrame?

DataFrame.renamedColumn()

DataFrame.withColumnRenamed()

DataFrame.wlthColumn()

col()

DataFrame.newColumn()

Correct Answer: B

The operation used to rename and replace an existing column in a DataFrame is DataFrame.withColumnRenamed(). This method allows you to specify the existing column name and the new column name you want to use, effectively renaming the column within the DataFrame.

Discussion

Sowwy1Option: B

B. DataFrame.withColumnRenamed()