DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #12
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Question #12: Real Exam Question with Answer & Explanation
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Question
Which of the following code blocks will most quickly return an approximation for the number of distinct values in column division in DataFrame storesDF?
Options
- AstoresDF.agg(approx_count_distinct(col("division")).alias("divisionDistinct"))
- BstoresDF.agg(approx_count_distinct(col("division"), 0.01).alias("divisionDistinct"))
- CstoresDF.agg(approx_count_distinct(col("division"), 0.15).alias("divisionDistinct"))
- DstoresDF.agg(approx_count_distinct(col("division"), 0.0).alias("divisionDistinct"))
- EstoresDF.agg(approx_count_distinct(col("division"), 0.05).alias("divisionDistinct"))
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