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DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #163
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Question #163: Real Exam Question with Answer & Explanation
The correct answer is E: 1. storesDF.storeId. See the full explanation below for the reasoning.
Transforming Data with Spark DataFrames
Question
The code block shown below should return a new DataFrame that is the result of an inner join between DataFrame storesDF and DataFrame employeesDF on column storeId and column employeeId. Choose the response that correctly fills in the numbered blanks within the code block to complete this task. Code block: storesDF.join(employeesDF, [__1__ == __2__, __3__ == __4__])
Options
- A1. storesDF.storeId
- B1. col("storeId")
- C1. storeId
- D1. col("storeId")
- E1. storesDF.storeId
Topics
#Spark DataFrames#Joins#DataFrame API#Column Expressions
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