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DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #58
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Question #58: Real Exam Question with Answer & Explanation
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Performing Aggregations on DataFrames
Question
Which of the following code blocks returns the number of rows in DataFrame storesDF for each unique value in column division?
Options
- AstoresDF.groupBy("division").agg(count())
- BstoresDF.agg(groupBy("division").count())
- CstoresDF.groupby.count("division")
- DstoresDF.groupBy().count("division")
- EstoresDF.groupBy("division").count()
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Topics
#Spark DataFrames#Aggregation#groupBy#count