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Top Customers by Sales Revenue

EasySQL · PostgreSQL00:00
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Your question is Top Customers by Sales Revenue. Start with the requirements and the one table on the right.

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Problem

You are given a single sales table from a Deloitte reporting dataset. Write a PostgreSQL query to return the top 10 customers by total revenue. Revenue should be calculated as the sum of sale_amount for each customer, ignoring rows where sale_amount is NULL. Return the customer name and total revenue, sorted from highest to lowest revenue.

Schema

sales
ColumnTypeDescription
sale_idPKINTUnique identifier for each sale
customer_nameVARCHAR(100)Customer name associated with the sale
sale_amountDECIMAL(10,2)Revenue amount for the sale
sale_dateDATEDate the sale was recorded
Tablessales
Your solutionPostgreSQL
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