nordic_comet_7043

Exemplar

Top 2.7%

Member Nº 4609

Joined Aug 2026

SQL

Common Table Expressions

Complex Data Patterns

Correlated Subquery

Python

Tuples

Unpacking

Dict Iteration

Spark

Window Frames

Window Deduplication

First & Last Values

Data Modeling

Metric Additivity

Constraints

Learned

SQL170

Python46

Milestones

7-day streak

1,129 runs in the past 26 weeksActive days: 14 · Max streak: 7

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Recent solves

Loops: Intermediate, Iterating Dict Items Challenge 1

Python · medium · lesson

Loops: Intermediate, Iterating Dict Items Challenge 2

Python · medium · lesson

Loops: Intermediate, zip() Parallel Iteration Challenge 2

Python · medium · lesson

Loops: Intermediate, zip() Parallel Iteration Challenge 1

Python · medium · lesson

Loops: Intermediate, enumerate() for Index Challenge 3

Python · medium · lesson

Loops: Intermediate, enumerate() for Index Challenge 2

Python · medium · lesson

Loops: Intermediate, enumerate() for Index Challenge 1

Python · medium · lesson

Complex Data: Intermediate, JSON_EXTRACT_SCALAR() Challenge 4

SQL · medium · lesson

Complex Data: Intermediate, JSON_EXTRACT_SCALAR() Challenge 2

SQL · medium · lesson

Complex Data: Intermediate, CAST JSON to Array/Map Challenge 3

SQL · medium · lesson