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GGrassiant/query.sql

Created April 15, 2022 17:54
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SQL Group and SubQuery
Raw
query.sql
with group_orders as (
SELECT customer_number, count(order_number) as numOfOrder
FROM orders
GROUP BY customer_number
)
SELECT customer_number
FROM orders
GROUP BY customer_number
HAVING count(order_number) = (SELECT MAX(numOfOrder) FROM group_orders)
#See https://leetcode.com/problems/customer-placing-the-largest-number-of-orders/
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