SourCaPlacement OS

Targeted Campus Assessment Prep

Setting up coding workspace...

Loading problem statement, test cases, and compiler sandbox

SourCaPlacement OS

Targeted Campus Assessment Prep

Loading SourCa...

Synchronizing placement benchmarks & campus recruitment roadmaps

SourCa/ Technical Preparation Platform

Companies Practice Progress College Insights Share Feedback Privacy

SourCa is an independent coding and assessment practice system designed from publicly available interview patterns. Not affiliated with or endorsed by any company.

INDEPENDENT PLATFORM

Practice Directory•

Cumulative Order Volume by Customer (Running Total)sql

Relational Database Schema

Cumulative Order Volume by Customer (Running Total)

Tables & Sample Fixtures

Table: Orders

orderId (int)	customerId (int)	orderDate (varchar)	amount (int)
1	101	2024-01-01	50
2	101	2024-01-05	30
3	102	2024-01-02	100
4	101	2024-01-10	20

query.sql

Execution Output Result

Click 'Run & Verify Query' to test your SQL against the sample test fixture.

SourCaPlacement OS

Targeted Campus Assessment Prep

Setting up coding workspace...

Loading problem statement, test cases, and compiler sandbox

Practice Directory•

Cumulative Order Volume by Customer (Running Total)sql

Relational Database Schema

Cumulative Order Volume by Customer (Running Total)

Tables & Sample Fixtures

Table: Orders

orderId (int)	customerId (int)	orderDate (varchar)	amount (int)
1	101	2024-01-01	50
2	101	2024-01-05	30
3	102	2024-01-02	100
4	101	2024-01-10	20

query.sql

Execution Output Result

Click 'Run & Verify Query' to test your SQL against the sample test fixture.