Complaint Trend Analysis by Category

MediumSQL · PostgreSQL00:00

Practice interviewer

In session

5 left

00:00

Your question is Complaint Trend Analysis by Category. Start with the requirements and the three tables on the right.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

You need to log in / sign up to run or submit.

Problem

Analyze QVC complaint data to surface category-level monthly trends in 2024. Your query should combine complaint records, category metadata, and optional resolution data to show which complaint categories are growing, how severe they are, and how they rank each month.

Schema

Tables

complaints
complaint_categories
complaint_resolutions

What to Return

Month formatted as YYYY-MM
Complaint category name
Total complaints in that month and category
Distinct customers who complained
Percent of complaints with High severity
Month-over-month complaint count change by category
Rank of categories within each month by complaint volume
Only category-month groups with at least 2 complaints

Tablescomplaintscomplaint_categoriescomplaint_resolutions

Your solutionPostgreSQL

You need to log in / sign up to run or submit.

Run a query to see results