SQL Editor
SQL Lastvalue Partition Example
Tables and Columns
Customer
- Id
(int)
- FirstName
(nvarchar)
- LastName
(nvarchar)
- City
(nvarchar)
- Country
(nvarchar)
- Phone
(nvarchar)
Order
- Id
(int)
- OrderDate
(datetime)
- OrderNumber
(nvarchar)
- CustomerId
(int)
- TotalAmount
(decimal)
OrderItem
- Id
(int)
- OrderId
(int)
- ProductId
(int)
- UnitPrice
(decimal)
- Quantity
(int)
Product
- Id
(int)
- ProductName
(nvarchar)
- SupplierId
(int)
- UnitPrice
(decimal)
- Package
(nvarchar)
- IsDiscontinued
(bit)
Supplier
- Id
(int)
- CompanyName
(nvarchar)
- ContactName
(nvarchar)
- ContactTitle
(nvarchar)
- City
(nvarchar)
- Country
(nvarchar)
- Phone
(nvarchar)
- Fax
(nvarchar)
Task:
List the orders for the year 2013. Include the lowest and highest sales amount for each month.
Click here
for details on
LAST_VALUE
.
SELECT MONTH(OrderDate) AS Month, CONCAT(FirstName, ' ', LastName) AS Customer, LAST_VALUE(TotalAmount) OVER(PARTITION BY MONTH(OrderDate) ORDER BY TotalAmount DESC ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) AS 'Lowest Monthly Sale', TotalAmount, LAST_VALUE(TotalAmount) OVER(PARTITION BY MONTH(OrderDate) ORDER BY TotalAmount ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) AS 'Highest Monthly Sale' FROM [Order] O JOIN Customer C ON O.CustomerId = C.Id WHERE YEAR(OrderDate) = 2013 ORDER BY MONTH(OrderDate), TotalAmount DESC
No records were found.
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