SQL Editor
SQL Lead Offset 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 monthly sales for the year 2013. For each month, include the sales for 6 months ahead into the future.
Click here
for details on
LEAD
.
SELECT MONTH(OrderDate) AS [Month], SUM(TotalAmount) AS 'Monthly Sales', LEAD(SUM(TotalAmount), 6) OVER(ORDER BY MONTH(OrderDate)) AS '6 Months ahead' FROM [Order] WHERE YEAR(OrderDate) = 2013 GROUP BY MONTH(OrderDate)
No records were found.
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