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Top 5 Customers by Purchase Frequency

EasySQL · PostgreSQL00:00
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Your question is Top 5 Customers by Purchase Frequency. Start with the requirements and the one table on the right.

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Problem

Wurth Louis & needs to identify its most frequent customers for the 2024 purchasing year. Write a PostgreSQL query using the sales_orders table to return the top five customers by number of orders placed between 2024-01-01 and 2024-12-31.

Assume the reporting date is 2025-01-01, so the previous year is defined as 2025-01-01 - INTERVAL '1 year' through, but not including, 2025-01-01.

Requirements

  1. Count orders for each customer within the one-year period.
  2. Return the five highest-frequency customers, ordering by order count descending and customer name ascending to break ties.

Schema

sales_orders
ColumnTypeDescription
order_idPKINTEGERUnique sales order identifier
customer_nameVARCHAR(100)Name of the Wurth Louis customer
order_dateDATEDate on which the order was placed
Tablessales_orders
Your solutionPostgreSQL
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