Practice

Real PySpark, graded in seconds. Pick a problem and hit Run.

DifficultyAll easy medium hard

TopicAll aggregations joins reshaping selecting and filtering strings dates nulls window functions

Ghosted Customersmediumjoinsjoinleft_anti
Match on Two Keysmediumjoinsjoinmulti-key
Spend by NamemediumjoinsjoingroupBysum
Who Ordered Whatmediumjoinsjoininner
Who Reports to Whommediumjoinsjoinself-joinalias