sweet_eagle_4177

Arbiter

Top 0.2%

Member Nº 0421

Joined May 2026

SQL

Window Frames

Correlated Subquery

Window Deduplication

Python

Recursion

Sliding Window

Frequency Counting

Spark

Window Frames

Window Deduplication

First & Last Values

Data Modeling

Indexing

Snowflake Schema

Grain Definition

Solved

SQL180

Python62

Data Modeling3

Spark2

Milestones

Top 10

Top 1% SQL

Top 1% Python

10 Hire verdicts

100 solved

Founder

3,909 runs in the past 26 weeksActive days: 81 · Max streak: 21

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Recent solves

Where You Stand

SQL · easy · lesson

Calculate the running average response time for each server ordered by timestamp.

SQL · medium · lesson

Calculate the running average response time for each server ordered by timestamp

SQL · medium · lesson

From transactions, return transaction_id, total_amount, and SUM(total_amount) OVER (ORDER BY transac

SQL · medium · lesson

Calculate a running total of transaction amounts ordered by date.

SQL · medium · lesson

Past the Threshold

The Generous Ones

Python · medium

Python · medium

The Gap Between Neighbors

Max Value Per Location