Report Recommendation — Sales by Customer Summary

Great to have you back! Let me suggest what I think is the perfect learning report given your Northwind data.

My Recommendation: Sales by Customer Summary Report

Why This Is the Perfect Choice:

Factor	✓
High Business Value	Every business needs to know their top customers, revenue per account, purchase patterns
Northwind Has Perfect Data	Customers → Orders → Order Details (complete sales chain with all relationships we need)
Universal Pattern	This is a staple report in every ERP/CRM system — you'll see this everywhere
Great Learning Exercise	Covers JOINs, aggregations (SUM, COUNT, AVG), GROUP BY, ORDER BY, date filtering
Perfect for Bursting	Can burst by Customer — send each customer their own sales summary (real-world use case!)
Extensible	Easy to add filters (by date range, region, product category) for more advanced variations

What This Report Would Show:

Per Customer:

Total Orders Count
Total Revenue (SUM of OrderDetails.Quantity × UnitPrice minus Discount)
Average Order Value
Total Freight Costs
Date Range (first order date → last order date)
Country/City (for geographic grouping if needed)

Business Use Cases:

Sales reps preparing customer meetings
Marketing targeting high-value customers
Finance tracking revenue by account
Identifying at-risk customers (recent purchase drop-off)

Alternative Options (if you prefer):

Option	Use Case	Complexity
Monthly Sales by Product	Product performance, inventory planning	Medium
Employee Sales Performance	Sales team KPIs, commissions	Medium
Product Category Revenue Trend	Category-level strategic decisions	High (needs time-series)

My Vote: Go with Sales by Customer Summary Report. It hits the sweet spot — universally valuable, perfect data fit, and teaches you the core ReportBurster + SQL skills you'll use everywhere.