SQL Editor
SQL Update Join Three Tables 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:
For customer Paul Henriot change the unit price to $25 for Queso Calibres in their order.
Click here
for details on
Update Join
.
UPDATE I SET I.UnitPrice = 25 FROM Customer C JOIN [Order] O ON O.CustomerId = C.Id JOIN OrderItem I ON O.Id = I.OrderId JOIN Product P ON P.Id = I.ProductId WHERE C.FirstName = 'Paul' AND C.LastName = 'Henriot' AND P.ProductName = 'Queso Cabrales'
SQL ran successfully
Note
: the changes were rolled back (undone)
to maintain the integrity of the database.
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in Austin, Texas. - vsn 44.0.0