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Exam Certified Associate Developer for Apache Spark topic 1 question 187 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 187
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

Which of the following code blocks returns a DataFrame containing only the rows from DataFrame storesDF where the value in column sqft is less than or equal to 25,000 AND the value in column customerSatisfaction is greater than or equal to 30?

  • A. storesDF.filter(col("sqft") <= 25000 and col("customerSatisfaction") >= 30)
  • B. storesDF.filter(col(sqft) <= 25000 & col(customerSatisfaction) >= 30)
  • C. storesDF.filter(col("sqft") <= 25000 & col("customerSatisfaction") >= 30)
  • D. storesDF.filter((col("sqft") <= 25000) & (col("customerSatisfaction") >= 30))
  • E. storesDF.filter(sqft <= 25000 and customerSatisfaction >= 30)
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Suggested Answer: A 🗳️
by Oks_An at Sept. 19, 2024, 2:22 p.m.

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Oks_An
2 months ago
Selected Answer: D
D. storesDF.filter((col("sqft") <= 25000) & (col("customerSatisfaction") >= 30)): This correctly uses the filter() method along with logical AND (&) to apply both conditions. Each condition is wrapped in parentheses to ensure proper evaluation.
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