Databricks Certified Associate Developer for Apache Spark — Question 158

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

Answer options

• A. DataFrame.renamedColumn()
• B. DataFrame.withColumnRenamed()
• C. DataFrame.wlthColumn()
• D. col()
• E. DataFrame.newColumn()

Correct answer: B

Explanation

The correct answer is B, as DataFrame.withColumnRenamed() is specifically designed to change the name of a column in a DataFrame. The other options either do not exist or do not serve the purpose of renaming a column.