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Select CustomerId, count(*) |
From receipts |
Group by CustomerId |
Order by count(*) |
LIMIT 1 |
20. For each date, return how many distinct customers visited on that day. |
Select date, count (distinct CustomerId) |
from receipts |
Group by date |
Give me the first name and last name of customers who have bought apple flavor Tart. |
Select distinct T4.FirstName, T4.LastName |
from goods as T1 JOIN items as T2 JOIN receipts as T3 JOIN customers as T4 ON T1.id = T2.item and T2.receipt = T3.ReceiptNumber and T3.CustomerId = T4.id |
where T1.flavor = "Apple" and T1.food = "Tart" |
21. What are the ids of Cookies whose price is lower than any Croissant? |
Select id |
From goods |
where food = "Cookie" and price < (select min(price) |
from goods |
where food = 'Croissant') |
Give me the ids of Cakes whose price is at least three times as much as the average price of Tart? |
Select id |
From goods |
where food = "Cake" and price >= 3 * (select avg(price) |
from goods |
where food = "Tart") |
What are the ids of goods whose price is above twice the average price of all goods? |
Select id |
From goods |
where price > 2 * (select avg(price) |
from goods) |
22. List the id, flavor and type of food of goods ordered by price. |
Select id, flavor, food |
From goods |
order by price |
Return a list of the id and flavor for Cakes ordered by flavor. |
Select id, flavor |
From goods |
where food = "Cake" |
order by flavor |
23. Find all the items that have chocolate flavor but were not bought more than 10 times. |
Select distinct T1.item |
From items as T1 JOIN goods as T2 ON T1.item = T2.id |
Where T2.flavor = "Chocolate" |
EXCEPT |
Select distinct item |
From items |
Group by item |
having count(*) > 10 |
What are the flavors available for Cake but not for Tart? |
Select distinct flavor |
From goods |
where food = "Cake" |
EXCEPT |
Select distinct flavor |
From goods |
where food = "Tart" |
24. What is the three most popular goods in this bakery? |
Select item |
From items |
Group by item |
Order by count (*) DESC |
LIMIT 3 |
25. Find the ids of customers who have spent more than 150 dollars in total. |
Select T3.CustomerId |
Subsets and Splits