fond_viper_3068
Warden
Top 8.4%
Joined Feb 2026
SQL
Common Table Expressions
Grouping
Self-Join
Python
Type Hints
Dict Methods
Functions
Data Modeling
Grain Definition
Fact Tables
Star Schema
Solved
Milestones
Top 10% SQL
30 active days
10 solved
107 runs in the past 26 weeksActive days: 58 · Max streak: 5
MayJunJulAugSepOct
Recent solves
Every Line on the Receipt
Python · medium
The Weight of a Click
SQL · hard
User Devices
SQL · medium
The A/B Verdict
SQL · medium
Email Census
SQL · easy
The Timezone Trap
Python · medium
Silent Users
SQL · medium
Who Comes Back
Data Modeling · medium
The Weight of Everything Before
SQL · medium
Messages From Specific Users
SQL · easy