noble_river_2696
Savant
Top 0.9%
Member Nº 3562
Joined Jul 2026
SQL
Common Table Expressions
Correlated Subquery
Self-Join
Python
Context Managers
Stack & Queue
Splitting & Joining
Spark
Spark Execution Model
Data Modeling
Metric Additivity
Indexing
Constraints
Pipeline Architecture
Deduplication Strategies
Idempotency
Retry & Failure Handling
Solved
Milestones
Top 100
Top 1% SQL
Top 2% Python
100 solved
Hire verdict
30 active days
1,507 runs in the past 26 weeksActive days: 35 · Max streak: 6
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Recent solves
Users Per Device Type
SQL · easy
Low-Byte CDN Responses
SQL · easy
The Company You Keep
SQL · medium
Median Failure Rate by Table
SQL · hard
Same-Day Session and Transaction Correlation
SQL · hard
Spending by Account Status
SQL · medium
Double Vision
SQL · easy
Time Served
SQL · hard
Provider Cost Change H1
SQL · easy
Activity Histogram
SQL · easy