PySpark Conditional Logic

7 interview problems on when/otherwise and derived columns, from easy to hard.

• Categorize Orders · Easy · Conditional Logic
• Conditional Aggregation · Medium · Aggregations
• Subtotals with ROLLUP · Hard · Pivot, Unpivot & Rollup
• All Combinations with CUBE · Hard · Pivot, Unpivot & Rollup
• Sessionize a Clickstream · Hard · Window Functions
• Reconcile Two Sources (Full Outer Join) · Hard · Joins
• Conversion Funnel · Hard · Aggregations

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Topics: Window Functions · Joins · Aggregations · Pivot, Unpivot & Rollup · Arrays · Null Handling · Conditional Logic · Dates · Filtering & Selection · Strings

Difficulty: Easy · Medium · Hard · PySpark interview roadmap · All problems