calm_stoat_9871
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Member Nº 0717
Joined May 2026
SQL
Window Frames
Array Transforms
Storage Optimization
Python
Generators
Binary Search
List Comprehension
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Window Frames
Window Deduplication
Higher-Order Functions
Data Modeling
2NF
Grain Definition
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Pipeline Architecture
SCD in Pipelines
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3,676 runs in the past 26 weeksActive days: 51 · Max streak: 6
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Recent solves
Gaps and Islands: Beginner
SQL · medium · lesson
The Row Count Surprise
SQL · easy
Nested Data
Data Modeling · medium · lesson
Nested Data
Data Modeling · medium · lesson
Nested Data, Columnar Storage & Nesting Challenge 2
Data Modeling · medium · lesson
Nested Data, Columnar Storage & Nesting Challenge 1
Data Modeling · medium · lesson
Nested Data, MAP: Dynamic Key-Value Pairs Challenge 2
Data Modeling · medium · lesson
Nested Data, MAP: Dynamic Key-Value Pairs Challenge 1
Data Modeling · medium · lesson
Nested Data, ARRAY: Ordered Collections Challenge 2
Data Modeling · medium · lesson
Nested Data, ARRAY: Ordered Collections Challenge 1
Data Modeling · medium · lesson