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DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #81

Which of the following code blocks returns a DataFrame containing a column month, an integer representation of the day of the year from column openDate from DataFrame storesDF. Note that column openDa

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Working with temporal data and DataFrame column transformations in Apache Spark

Question

Which of the following code blocks returns a DataFrame containing a column month, an integer representation of the day of the year from column openDate from DataFrame storesDF. Note that column openDate is of type integer and represents a date in the UNIX epoch format - the number of seconds since midnight on January 1st, 1970. A sample of storesDF is displayed below:

Code block:

stored.withColumn("openTimestamp”, col("openDate").cast(1)) .withColumn(2, 3(4))

Options

  • A
    1. "Data"
  • B
    1. "Timestamp"
  • C
    1. "Timestamp"
  • D
    1. "Timestamp"

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Topics

#DataFrame transformations#Date/Time functions#Type casting#UNIX timestamp
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