SQL Problem Solving | Dataford Interview Questions

Describe how you would write SQL to solve a data problem from scratch.

Use the provided customers and orders tables. Return customers with at least two completed orders, including their order count, total completed order value, latest completed order date, and spending classification.

Output

One row per qualifying customer with columns customer_id, customer_name, order_count, total_spent, latest_order_date, and spending_band.
Exclude customers with fewer than two completed orders.
Sort by total_spent descending, then customer_id ascending.

Schema

customers

Column	Type	Description
customer_idPK	INT	Unique customer identifier
customer_name	VARCHAR(100)	Customer's full name
email	VARCHAR(255)	Customer email address

orders

Column	Type	Description
order_idPK	INT	Unique order identifier
customer_id	INT	Customer who placed the order
status	VARCHAR(30)	Order processing status
order_amount	NUMERIC(10,2)	Order monetary value
order_date	DATE	Date the order was placed

Your question is SQL Problem Solving. Start with the requirements and the two tables in the Question tab.

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Problem