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

Barista AveragesmediumaggregationsgroupByavghavingfloat-tolerance
Basket Contentsmediumaggregationscollect_setsort_arraygroupBy
Count the Refundsmediumaggregationsconditional-aggregationwhensum
Store-Day RevenuemediumaggregationsgroupBymulti-keysum