adding sql problems

Author: shreyashji

39.1 Yelp Top Cool Votes problem.sql

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+#Top Cool Votes
+#Find the review_text that received the highest number of  'cool' votes
+#Output the business name along with the review text with the highest numbef of 'cool' votes.
+
+select business_name,review_text from
+(select business_name,review_text,cool,
+dense_rank() over(order by cool desc) as rnk
+ from yelp_reviews) sub
+ where rnk=1

39.Amazon problem Highest Cost Orders.sql

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+#link https://platform.stratascratch.com/coding/9915-highest-cost-orders?python=
+#Q. Highest Cost Orders
+
+#Find the customer with the highest daily total order cost between 2019-02-01 to 2019-05-01. 
+#If customer had more than one order on a certain day, sum the order costs on daily basis. Output their 
+#first name, total cost of their items, and the date.
+#For simplicity, you can assume that every first name in the dataset is unique.
+select first_name,total_order_cost,order_date
+from
+(select first_name,
+sum(total_order_cost) total_order_cost,
+order_date
+,rank() over(order by sum(total_order_cost) desc) rnk
+from customers c join orders o 
+on c.id= o.cust_id
+where order_date between '2019-02-01' and '2019-05-01'
+group by first_name, order_date) sub 
+where rnk=1;