DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #82
The code block shown below contains an error. The code block intended to return a new DataFrame that is the result of an inner join between DataFrame storesDF and DataFrame employeesDF on column store
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Question
The code block shown below contains an error. The code block intended to return a new DataFrame that is the result of an inner join between DataFrame storesDF and DataFrame employeesDF on column storeId. Identify the error. Code block:
StoresDF.join(employeesDF, Seq("storeId")
Options
- AThe key column storeId needs to be a string like "storeId".
- BThe key column storeId needs to be specified in an expression of both Data Frame columns like
- CThe default argument to the joinType parameter is "inner" - an additional argument of "left" must
- DThere is no DataFrame.join() operation - DataFrame.merge() should be used instead.
- EThe key column storeId needs to be wrapped in the col() operation.
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