civic_moose_6055
Exemplar
Top 2.2%
Member Nº 1862
Joined Jun 2026
SQL
Self-Join
String Building
Type Casting
Python
Iterators
Regex
Generators
Spark
Exploding Arrays
Regex Functions
Catalyst Optimizer
Data Modeling
Self-Referential
Many-to-Many
Metric Additivity
Solved
SQL22
Data Modeling0
Milestones
Top 100
Top 7% SQL
10 solved
890 runs in the past 26 weeksActive days: 16 · Max streak: 4
MarAprMayJunJulAugSep
Recent solves
Cheapest Cost Per Region
SQL · easy
Suspected Bot Sessions
SQL · easy
The Waiting Room
SQL · easy
Show all users alongside any transactions they have made
SQL · medium · lesson
Show each username paired with how long their longest session lasted using the MAX of session_durati
SQL · medium · lesson
Show each user's username with their session_id and pages_viewed
SQL · medium · lesson
Find product names and amounts for transactions over $50.
SQL · medium · lesson
Type every column in a product catalog schema
Data Modeling · medium · lesson
Design a payments table: UUID key, integer cents for money, and a status lookup table
Data Modeling · medium · lesson
Pick the right data type for every employees column
Data Modeling · medium · lesson