Databricks Data Engineer Professional Practice Questions - Databricks Certified Data Engineer Professional Exam

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You need to classify rows with a few regex-based rules in PySpark and keep the job optimizable by Catalyst. What should you do?

Implement the logic with a Python UDF Convert the DataFrame to pandas first Use built-in column expressions such as `when`, `regexp_extract`, and `rlike` Collect the data to the driver and loop in Python

Correct Answer:

Use built-in column expressions such as `when`, `regexp_extract`, and `rlike`

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