Create immediate-food-delivery-iii.sql

Author: kamyu104

MySQL/immediate-food-delivery-iii.sql

@@ -0,0 +1,13 @@
+# Time:  O(nlogn)
+# Space: O(n)
+
+SELECT
+    order_date,
+    ROUND(SUM(CASE 
+        WHEN order_date = customer_pref_delivery_date THEN 1 
+        ELSE 0 
+    END)*100.0 / COUNT(*),
+    2) AS immediate_percentage 
+FROM Delivery 
+GROUP BY 1 
+ORDER BY 1;