이지영: [SQL] Immediate_Food_Delivery_II_241031

Author: yeongleej

SQL/08주차/JY_Immediate_Food_Delivery_II.sql

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+-- 1174. Immediate Food Delivery II
+-- https://leetcode.com/problems/immediate-food-delivery-ii/?envType=study-plan-v2&envId=top-sql-50
+select round(count(customer_id)/(select count(distinct customer_id) from delivery), 4)*100 as immediate_percentage
+from delivery
+where order_date = customer_pref_delivery_date
+      and (customer_id, order_date) in (select customer_id, min(order_date) from delivery group by customer_id)