blueblueblue
Data Engineers are Internet Plumbers
Savant
Top 0.7%
Member Nº 3880
Joined Aug 2026
SQL
Date Formatting
Timestamp Types
Outer Joins
Python
Type Hints
Frequency Counting
Functions
Spark
Higher-Order Functions
Exploding Arrays
Regex Functions
Data Modeling
Self-Referential
Many-to-Many
Metric Additivity
Solved
SQL129
Python55
Milestones
Top 100
Top 1% SQL
Top 1% Python
100 solved
30 active days
7-day streak
1,169 runs in the past 26 weeksActive days: 31 · Max streak: 14
MarAprMayJunJulAugSep
Recent solves
Familiar Faces
Python · easy
Session Logins Dec 13 to 19
SQL · easy
The Line Splitter
Python · easy
Unbroken
Python · easy
The Odd Digits
Python · easy
Every Trace
Python · medium
Engagement Gap
SQL · medium
The Bouncer
Python · easy
The Letter Census
Python · easy
The Integer Sieve
Python · easy