giant_field_9056
Warden
Top 7.8%
Member Nº 0988
Joined May 2026
SQL
Window Deduplication
Row Numbering
Window Partitioning
Python
Frequency Counting
Dunder Methods
Dict Methods
Spark
Distributed Primitives
Spark Execution Model
Spark UI Diagnosis
Data Modeling
Metric Additivity
Solved
SQL15
Python11
Spark1
Milestones
Strong Hire
Founder
10 solved
336 runs in the past 26 weeksActive days: 10 · Max streak: 4
MarAprMayJunJulAugSep
Recent solves
Revenue per category, in-stock only
Spark · medium · lesson
Line totals for multi-unit items
Spark · medium · lesson
Count in-stock products per category
Spark · medium · lesson
Capstone: revenue by order status
Spark · medium · lesson
Capstone: average line value per category
Spark · medium · lesson
Sized by config: average price per category
Spark · medium · lesson
No shuffle, no driver round-trip: line totals
Spark · medium · lesson
A pipelined narrow chain: discounted prices
Spark · medium · lesson
Aggregate, do not collect: top rating per category
Spark · medium · lesson
Few keys, few tasks: total view time per device
Spark · medium · lesson