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Exam Certified Associate Developer for Apache Spark All Questions

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Exam Certified Associate Developer for Apache Spark topic 1 question 172 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 172
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

The code block shown below contains an error. The code block is intended to create and register a SQL UDF named "ASSESS_PERFORMANCE" using the Python function assessPerformance() and apply it to column customerSatistfaction in table stores. Identify the error.

Code block:

spark.udf.register("ASSESS_PERFORMANCE", assessPerformance)
spark.sql("SELECT customerSatisfaction, assessPerformance(customerSatisfaction) AS result FROM stores")

  • A. There is no sql() operation — the DataFrame API must be used to apply the UDF assessPerformance().
  • B. The order of the arguments to spark.udf.register() should be reversed.
  • C. The customerSatisfaction column cannot be called twice inside the SQL statement.
  • D. Registered UDFs cannot be applied inside of a SQL statement.
  • E. The wrong SQL function is used to compute column result — it should be ASSESS_PERFORMANCE instead of assessPerformance.
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Suggested Answer: E 🗳️
by Sowwy1 at April 10, 2024, 6:02 p.m.

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Sowwy1
7 months, 2 weeks ago
E. The wrong SQL function is used to compute column result — it should be ASSESS_PERFORMANCE instead of assessPerformance.
upvoted 1 times
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