[英]How do I write a query to get the first_name and last_name of customers having orders containing more than 2 items?
這應該有效:
SELECT
s.first_name, s.last_name
FROM sales_order s
JOIN sales_order_item so
ON so.fk_sales_order=s.id_sales_order
GROUP BY so.fk_sales_order
HAVING COUNT(*)>2
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