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Exam Certified Associate Developer for Apache Spark topic 1 question 164 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 164
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

The code block shown below should return a new DataFrame that is the result of a position-wise union between DataFrame storesDF and DataFrame acquiredStoresDF. Choose the response that correctly fills in the numbered blanks within the code block to complete this task.

Code block:

__1__.__2__(__3__)

  • A. 1. DataFrame
    2. union
    3. storesDF, acquiredStoresDF
  • B. 1. DataFrame
    2. concat
    3. storesDF, acqulredStoresDF
  • C. 1. storesDF
    2. union
    3.acquiredStoresDF
  • D. 1. storesDF
    2. unionByName
    3. acquiredStoresDF
  • E. 1. DataFrame
    2. unionAll
    3. storesDF, acquiredStoresDF
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Suggested Answer: C 🗳️
by Sowwy1 at April 10, 2024, 5:49 p.m.

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Souvik_79
3 months, 1 week ago
D. unionByName() is used to perform a position-wise union between two DataFrames. This method ensures that the union is based on the column names, so columns are matched by name rather than by position.
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Sowwy1
6 months, 3 weeks ago
C. 1. storesDF 2. union 3.acquiredStoresDF
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