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Author: ggeerraarrdd

README.md

@@ -143,6 +143,7 @@ To make the daily tasks of creating a new file and updating the index easier, th
 | 112   | [Percentage of Users Attended a Contest](https://leetcode.com/problems/percentage-of-users-attended-a-contest/description/)                                   | [Solution](solutions/112_percentage_of_users_attended_a_contest.md)                   | LeetCode    | Easy         |   |
 | 113   | [Queries Quality and Percentage](https://leetcode.com/problems/queries-quality-and-percentage/description/)                                                   | [Solution](solutions/113_queries_quality_and_percentage.md)                           | LeetCode    | Easy         |   |
 | 114   | [Monthly Transactions I](https://leetcode.com/problems/monthly-transactions-i/description/)                                                                   | [Solution](solutions/114_monthly_transactions_i.md)                                   | LeetCode    | Medium       |   |
+| 115   | [Immediate Food Delivery II](https://leetcode.com/problems/immediate-food-delivery-ii/description/)                                                           | [Solution](solutions/115_immediate_food_delivery_ii.md)                               | LeetCode    | Medium       |   |
 
 ## Author(s)
 

solutions/115_immediate_food_delivery_ii.md

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+# SQL Everyday \#115
+
+## Immediate Food Delivery II
+
+Site: LeetCode\
+Difficulty per Site: Medium
+
+## Problem
+
+If the customer's preferred delivery date is the same as the order date, then the order is called *immediate*; otherwise, it is called *scheduled*.
+
+The *first order* of a customer is the order with the earliest order date that the customer made. It is guaranteed that a customer has precisely one first order.
+
+Write a solution to find the percentage of immediate orders in the first orders of all customers, *rounded to 2 decimal places*. [[Full Description](https://leetcode.com/problems/immediate-food-delivery-ii/description/)]
+
+## Submitted Solution
+
+```sql
+-- Submitted Solution
+SELECT
+    ROUND(SUM(IF(order_date = customer_pref_delivery_date, 1, 0)) / COUNT(*) * 100, 2) as immediate_percentage
+FROM Delivery
+WHERE (customer_id, order_date) IN 
+    (
+    SELECT
+        customer_id
+        ,min(order_date)
+    FROM Delivery
+    GROUP BY customer_id
+    )
+;
+```
+
+## Site Solution
+
+```sql
+-- LeetCode Solution 
+-- None provided
+```
+
+## Notes
+
+TODO
+
+Go to [Table of Contents](/README.md#contents)\
+Go to [Overview](/README.md)