tough_crest_8643
Exemplar
Top 2.3%
Joined Sep 2026
SQL
Correlated Subquery
Window Deduplication
Multiple WINDOWs
Python
Context Managers
String Formatting
File Context Manager
Spark
Window Frames
Window Deduplication
Higher-Order Functions
Data Modeling
Metric Additivity
Indexing
Constraints
Pipeline Architecture
Late-Arriving Data
Event Streaming Platforms
Event-Driven Architecture
Solved
SQL144
Milestones
Top 100
Top 1% SQL
100 solved
7-day streak
448 runs in the past 26 weeksActive days: 13 · Max streak: 13
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