level_koala_6605
Exemplar
Top 2.6%
Joined Sep 2026
SQL
Window Deduplication
Common Table Expressions
Storage Optimization
Python
Recursion
Type Hints
Context Managers
Spark
Multiple Windows
Inequality Joins
Regex Functions
Data Modeling
Metric Additivity
Indexing
Constraints
Pipeline Architecture
Late-Arriving Data
Event Streaming Platforms
Event-Driven Architecture
Solved
Milestones
Top 2% Python
Top 4% SQL
50 solved
7-day streak
382 runs in the past 26 weeksActive days: 22 · Max streak: 8
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Recent solves
No One Left Behind
Python · medium
The Second Summit
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Where the Buck Stops
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The Narrow Lens
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The Blast Radius
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The Weight of the Book
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The Squeeze
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The Gate Keeper
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The String Shrinker
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Between the Clicks
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