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Commit 6ef6ddd

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Adding Jars
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‎medium/1532. The Most Recent Three Orders.sql

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -11,11 +11,11 @@ ORDER BY c.name,c.customer_id,r.order_date DESC;
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---------------Without Window function---------------
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SELECT o1.customer_id,o1.order_date,COUNT(*)
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SELECT o1.customer_id,o1.order_date,COUNT(o2.order_date)
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FROM orders_1532 o1
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INNER JOIN orders_1532 o2 ON o1.customer_id=o2.customer_id AND o1.order_date<=o2.order_date
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GROUP BY o1.customer_id,o1.order_date
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HAVING COUNT(*)<=3
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HAVING COUNT(o2.order_date)<=3
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ORDER BY 1,2 DESC;
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-- Main logic is over now we only need to apply 2 joins to bring other columns.

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