rich_moon_7293
Warden
Top 7.8%
Member Nº 4562
Joined Aug 2026
SQL
Common Table Expressions
Outer Joins
Self-Join
Python
Dunder Methods
Type Hints
Splitting & Joining
Spark
Window Frames
Window Deduplication
Inequality Joins
Data Modeling
Self-Referential
Many-to-Many
Metric Additivity
Pipeline Architecture
SCD in Pipelines
Micro-Batch vs True Streaming
Data Lake Architecture
Solved
Python34
SQL15
Pipeline Architecture0
Milestones
Top 3% Python
10 solved
7-day streak
First interview
256 runs in the past 26 weeksActive days: 20 · Max streak: 15
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Recent solves
Campaign Click Rate
SQL · medium
The Zigzag Encoder
Python · medium
The Cipher Wheel
Python · easy
Everything That Repeats
Python · easy
The Mirror Index
Python · easy
The Unbroken Line
Python · medium
The Only Difference
Python · easy
The Version Parade
Python · easy
Into One Stream
Python · easy
30-Day Page View Counts
SQL · easy