Which of the following operations can be used to perform a left join on two DataFrames?
Which of the following operations can be used to perform a left join on two DataFrames?
DataFrame.merge() is the correct operation to perform a left join on two DataFrames. The merge() method provides a parameter called 'how' where you can specify the type of join; using 'how=left' will execute a left join.
A. DataFrame.join()