📦 LeetCode SQL: Immediate Food Delivery II | Master CTEs, MIN, GROUP BY & HAVING!

🚀 SQL Interview Prep – Problem #21 of 50!

In this video, we solve the "Immediate Food Delivery II" problem from LeetCode, the 21st question in our 50 SQL problem series. This problem is a great way to enhance your skills in Common Table Expressions (CTEs), aggregation functions, and filtering data efficiently.

🔍 What This Problem Will Teach You:
✅ Using CTEs (WITH) to create temporary result sets
✅ Finding the first order date per customer using MIN(order_date) and GROUP BY
✅ Calculating the percentage of immediate deliveries
✅ Using HAVING and DATE_DIFF to filter specific conditions
✅ Applying COUNT, DISTINCT, and ROUND for statistical analysis

📌 LeetCode Problem Link: https://leetcode.com/problems/immediate-food-delivery-ii

** we selected too much data in temporary table which was not required [it was only for information purpose]

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