german_gerken
Savant
Top 0.9%
Member Nº 4980
Joined Sep 2026
SQL
Window Deduplication
Common Table Expressions
Inequality Joins
Python
Modules
Splitting & Joining
Collections
Spark
Window Frames
Window Deduplication
Inequality Joins
Data Modeling
Metric Additivity
Surrogate Keys
Indexing
Solved
Data Modeling0
Milestones
Weekly gold ×2
Top 100
Steward ×2
Weekly silver
Top 3% SQL
Top 7% Python
861 runs in the past 26 weeksActive days: 25 · Max streak: 21
AprMayJunJulAugSepOct
Recent solves
30-Day Page View Counts
SQL · easy
String Functions: Intermediate
SQL · medium · lesson
The Address Surgeon
Python · easy
Back Again
SQL · medium
The Dependency Resolver
Python · medium
Average Accuracy by Framework
SQL · medium
String Functions: Intermediate
SQL · medium · lesson
String Functions: Intermediate
SQL · medium · lesson
String Functions: Intermediate, TRIM() Challenge 3
SQL · medium · lesson
String Functions: Intermediate, TRIM() Challenge 2
SQL · medium · lesson