Which of the following code blocks fails to return a new DataFrame that is the result of an inner join between DataFrame storesDF and DataFrame employeesDF on column storeId and column employeeId?
Which of the following code blocks fails to return a new DataFrame that is the result of an inner join between DataFrame storesDF and DataFrame employeesDF on column storeId and column employeeId?
The correct answer is the option that fails to return a new DataFrame due to syntactical issues or incorrect usage of methods. In option A, `col("storeId")` and `col("employeeId")` should not be used with Seq, as Seq expects a collection of strings representing column names. Instead, it should simply be `Seq("storeId", "employeeId")`. This misuse of the `col` function in option A leads to a failure in executing an inner join, making option A incorrect.
A, because col keyword is not needed while joining
storesDF.join(employeesDF, Seq("storeId", "employeeId"))
Sorry A, no col