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Split a DataFrame such that even numbers appear in one column and odd numbers in another

Spark/Big Datamedium0.5 min readPremium
Frequency
Low
Asked at 1 company
Category
452
questions in Spark/Big Data
Difficulty Split
88E|81M|283H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
KPMG
Key Concepts Tested
partitionpythonsparksql
Expert AnswerPremium
94 wordsIncludes code examplesInterview-ready
**Implementation**: Use `when`/`otherwise` with modulo—each row gets non-null in one column. ```python from pyspark.sql.functions import when, col, lit df = df.withColumn("even", when(col("num") % 2 == 0, col("num")).otherwise(lit(None))) .withColumn("odd", when(col("num") % 2 != 0, col("num")).otherwise(lit(None))) ``` **Why This Approach**: Single pass; no shuffle; Catalyst optimizes the expressions....
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