lanky_lemur_5402
Exemplar
Top 2.2%
Member Nº 2681
Joined Jul 2026
SQL
Multiple WINDOWs
Common Table Expressions
Storage Optimization
Spark
Salting Strategy
Cost Optimization
Shuffle Optimization
Data Modeling
Self-Referential
Many-to-Many
One-to-One
Pipeline Architecture
Kappa Architecture
Dependency Management
Table Formats
Solved
SQL89
Pipeline Architecture2
Milestones
Top 100
Top 1% SQL
50 solved
Hire verdict
Solution author
1,526 runs in the past 26 weeksActive days: 5 · Max streak: 3
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Recent solves
Live Viewers, Live Billing
Pipeline Architecture · hard
The Clicks We Throw Away
Pipeline Architecture · hard
Fresh and Forever
Pipeline Architecture · medium · lesson
A retailer's orders pipeline processes 1 billion events per day at peak volume, and an executive das
Pipeline Architecture · medium · lesson
Fresh and Forever
Pipeline Architecture · medium · lesson
Settled by Morning
Pipeline Architecture · medium · lesson
A meal-kit subscription company has two raw inputs: a Postgres orders database where rows accumulate
Pipeline Architecture · medium · lesson
The Final Sale
SQL · medium
Two Sides of the Ledger
SQL · hard
The Weight of a Click
SQL · hard