Monthly Revenue Change

A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

hard

Seniority

L4

Problem

For each month, compute total transaction revenue, then calculate the percentage change from the prior month, rounded to 2 decimal places. Results should appear chronologically. The first month has no prior month, so show null for its percentage change.

Summary

Revenue, month over month.

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