rustic_fox_4277
Warden
Top 7.8%
Member Nº 2607
Joined Jul 2026
SQL
Storage Optimization
Conditional Aggregation
Date Formatting
Python
Frequency Counting
Dict Methods
Functions
Spark
Window Deduplication
Regex Functions
Catalyst Optimizer
Data Modeling
Self-Referential
SCD Strategy
Indexing
Pipeline Architecture
SCD in Pipelines
Solved
SQL23
Python15
Spark2
Data Modeling1
Pipeline Architecture0
Milestones
Top 6% SQL
Top 10% Python
10 solved
Solution author
7-day streak
First interview
575 runs in the past 26 weeksActive days: 28 · Max streak: 7
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Recent solves
User Age Ranking
SQL · easy · lesson
The Loudest Signals
SQL · easy
Best in Show
SQL · medium
Before It Clears
Pipeline Architecture · medium · lesson
The First Encounter
Python · easy
Profit per region
Spark · easy · lesson
Product count per category
Spark · easy · lesson
In-stock products, single stage
Spark · easy · lesson
Count in-stock products per category
Spark · medium · lesson
No shuffle, no driver round-trip: line totals
Spark · medium · lesson