DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #30
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Question #30: Real Exam Question with Answer & Explanation
Sign in or unlock DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK to reveal the answer and full explanation for question #30. The question stem and answer options stay visible for context.
Question
The code block shown below contains an error. The code block is intended to return a DataFrame containing a column openDateString, a string representation of Java's SimpleDateFormat. Identify the error. 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. An example of Java's SimpleDateFormat is "Sunday, Dec 4, 2008 1:05 PM". A sample of storesDF is displayed below: Code block: storesDF.withColumn("openDateString", from_unixtime(col("openDate"), "EEE, MMM d, yyyy h:mm a", TimestampType()))
Options
- AThe from_unixtime() operation only accepts two parameters - the TimestampTime() arguments
- BThe from_unixtime() operation only works if column openDate is of type long rather than integer -
- CThe second argument to from_unixtime() is not correct - it should be a variant of
- DThe from_unixtime() operation automatically places the input column in java's SimpleDateFormat
- EThe column openDate must first be converted to a timestamp, and then the Date() function can
Unlock DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK to see the answer
You've previewed enough free DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK questions. Unlock DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK for full answers, explanations, the timed quiz mode, progress tracking, and the master PDF. Question stem and options stay visible so you can still see what's on the exam.