round_lake_7742
Exemplar
Top 2.2%
Member Nº 2827
Joined Jul 2026
SQL
Correlated Subquery
Multiple WINDOWs
Scalar Subquery
Python
Splitting & Joining
Dict Merging
Nested Dicts
Spark
Window Frames
Multiple Windows
Inequality Joins
Data Modeling
Metric Additivity
Indexing
Constraints
Solved
SQL45
Python0
Milestones
Top 3% SQL
10 solved
633 runs in the past 26 weeksActive days: 23 · Max streak: 6
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Recent solves
Model Training Completion Rate
SQL · medium
Build Success Rate by Trigger
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The Transaction Breakdown
SQL · easy
Long Messages
SQL · medium
Proof of Presence
SQL · medium
High-Rated In-Stock Percentage
SQL · easy
The Org Chart in Numbers
SQL · hard
Alert Response Breakdown
SQL · medium
Error Severity Buckets
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The Quiet Alarms
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