added the files you asked for your coffee kiosk

0 database.sql

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+use master
+go  
+drop database if exists CoffeeDB
+go 
+create database CoffeeDB
+go 
+use CoffeeDB

1 table.sql

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+/*
+PurchaseID primary key int not null unique 
+PurchaseTime datetime not before today not null not blank 
+PurchaseItem varchar(30) not null not blank 
+PriceEach decimal(5,2) not null not negative
+Quantity int not null
+TotalPrice decimal(5,2) not null
+PaymentMethod varchar(5) must be either cash or card not null not blank
+*/
+
+drop table if exists CoffeeKiosk
+go 
+create table dbo.CoffeeKiosk(
+    PurchaseId int not null identity primary key,
+    PurchaseDate date not null constraint CoffeeKiosk_Purchase_time_cannot_be_after_current_date check(PurchaseDate <= getdate()),
+    PurchaseItem varchar(30) not null constraint CoffeeKiosk_Purchase_item_cannot_be_blank check(PurchaseItem <> ''),
+    PriceEach decimal(5,2) not null constraint CoffeeKiosk_price_each_cannot_be_a_negative_number check(PriceEach >= 0),
+    Quantity int not null,
+    TotalPrice as PriceEach * Quantity persisted, 
+    PaymentMethod varchar(5) not null constraint CoffeKiosk_Payment_method_must_be_either_cash_or_card check(PaymentMethod in('cash', 'card'))
+
+)

3 sample data.sql

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+delete coffeeKiosk
+
+insert CoffeeKiosk(PurchaseDate, PurchaseItem, PriceEach, Quantity, PaymentMethod)
+select '2025-04-12', 'Cappuccino', 3.50, 2, 'card'
+union select '2024-01-15', 'Latte', 3.20, 1, 'cash'
+union select '2022-12-25', 'Espresso', 2.50, 2, 'card'
+union select '2020-03-06', 'Mocha', 3.80, 1, 'card'
+union select '2019-02-10', 'Americano', 2.80, 1, 'cash'
+union select '2009-10-15', 'Cappuccino', 3.50, 3, 'card'
+union select '2010-07-03', 'Croissant', 2.00, 2, 'cash'
+union select '2011-01-12', 'Flat White', 3.00, 1, 'card'
+union select '2012-02-22', 'Latte', 3.20, 2, 'cash'
+union select '2025-08-21', 'Iced Coffee', 3.60, 1, 'card'
+union select '2024-03-09', 'Cappuccino', 3.50, 1, 'cash'
+union select '2025-01-20', 'Espresso', 2.50, 4, 'card'
+union select '2023-05-18', 'Sandwich', 4.50, 1, 'card'
+union select '2024-09-16', 'Mocha', 3.80, 2, 'cash'
+union select '2024-06-13', 'Latte', 3.20, 1, 'card'
+union select '2025-03-09', 'Tea', 2.00, 2, 'cash'
+union select '2025-04-11', 'Cappuccino', 3.50, 1, 'card'
+union select '2025-04-12', 'Brownie', 2.20, 3, 'cash'
+union select '2025-04-12', 'Espresso', 2.50, 1, 'card'
+union select '2025-04-12', 'Iced Latte', 3.70, 2, 'card'
+union select '2025-04-12', 'Espresso', 2.50, -1, 'card'
+union select '2025-04-12', 'Iced Latte', 3.70, -2, 'card'

4 reports.sql

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+--Daily revenue: How much money did we make today?
+select TodaysRevenue = sum(TotalPrice), day = c.PurchaseDate
+from CoffeeKiosk c
+group by c.PurchaseDate
+order by c.PurchaseDate desc
+
+--Top products: What are the top 5 products by sales volume or revenue in the last month?
+select top 5 AmountSold = count(c.PurchaseItem), Revenue = sum(c.TotalPrice), c.PurchaseItem
+from CoffeeKiosk c
+where c.PurchaseDate between datefromparts(year(getdate()), month(getdate()) - 1, day(getdate())) and datefromparts(year(getdate()), month(getdate()), day(getdate())) 
+group by c.PurchaseItem
+order by count(c.PurchaseItem) desc, sum(c.TotalPrice) desc
+
+
+--Payment reconciliation: How much came in by cash vs card each day?
+select  Sum = sum(c.TotalPrice), c.PaymentMethod
+from CoffeeKiosk c
+group by c.PaymentMethod
+
+
+
+