rapid_pond_6738

Exemplar

Top 2.2%

Member Nº 1213

Joined May 2026

SQL

String Building

Date Differences

Type Casting

Python

Modules

Tuples

List Modification

Spark

Catalyst Optimizer

Salting Strategy

Distributed Primitives

Data Modeling

Self-Referential

Many-to-Many

Metric Additivity

Learned

Python95

SQL89

Milestones

Top 100

754 runs in the past 26 weeksActive days: 16 · Max streak: 3

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Recent solves

From user_sessions, count how many sessions started in the year 2024 as total_2024

SQL · medium · lesson

From user_sessions, return session_id, session_start, and session_start plus 7 days as one_week_late

SQL · medium · lesson

From user_sessions, return session_id and session_start cast to DATE as session_day

SQL · medium · lesson

Find users who signed up more than 6 months ago

SQL · medium · lesson

Measure user tenure

SQL · medium · lesson

For each user, find the date 3 months before their signup

SQL · medium · lesson

Calculate a 30-day return deadline for each transaction

SQL · medium · lesson

Show each deployment with its service name, deploy time, and today's date

SQL · medium · lesson

Find users who signed up on February 2, 2025

SQL · medium · lesson

Build a dynamic report header

SQL · medium · lesson