how to generate barcode in c# UPDATE Sales.SalesOrderHeader SET ShipDate = NULL WHERE SalesOrderID = 75123 GO in C#

Generate QR in C# UPDATE Sales.SalesOrderHeader SET ShipDate = NULL WHERE SalesOrderID = 75123 GO

UPDATE Sales.SalesOrderHeader SET ShipDate = NULL WHERE SalesOrderID = 75123 GO
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In the existing query window, type, highlight, and execute the following code to create the function:
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CREATE FUNCTION Sales.GetUnshippedOrders() RETURNS TABLE AS RETURN SELECT a.SalesOrderID, a.CustomerID, a.OrderDate, a.DueDate, c.Name, b.OrderQty FROM Sales.SalesOrderHeader a INNER JOIN Sales.SalesOrderDetail b ON a.SalesOrderID = b.SalesOrderID INNER JOIN Production.Product c ON b.ProductID = c.ProductID WHERE a.ShipDate IS NULL GO
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Test the function. Turn on the display of the actual execution plan to verify that SQL Server did not execute the function but instead substituted the function body into the SELECT statement. In the existing query window, type, highlight, and execute the following code:
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SELECT c.FirstName, c.MiddleName, c.LastName FROM Sales.GetUnshippedOrders() a INNER JOIN Sales.Customer b ON a.CustomerID = b.CustomerID INNER JOIN Person.Person c ON b.PersonID = c.BusinessEntityID GO
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In the existing query window, type, highlight, and execute the following code to reset the data to the original values:
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UPDATE Sales.SalesOrderHeader SET ShipDate = '08/07/2004' WHERE SalesOrderID = 75123 GO
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e xercise 3
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Create a Multi-Statement Table-Valued Function
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In this exercise, you create and use a multi-statement table-valued function to return the most recent order for a customer.
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Lesson 2: User-Defined Functions
Open a new query window, type, highlight, and execute the following code to create the function:
CREATE FUNCTION Sales.GetLastShippedCustomerOrder (@CustomerID INT) RETURNS @CustomerOrder TABLE (SalesOrderID CustomerID OrderDate DueDate Name OrderQty AS BEGIN DECLARE @MaxOrderDate DATETIME INT INT DATETIME DATETIME NVARCHAR(50) INT NOT NULL, NOT NULL, NOT NULL, NOT NULL, NOT NULL, NOT NULL)
SELECT @MaxOrderDate = MAX(OrderDate) FROM Sales.SalesOrderHeader WHERE CustomerID = @CustomerID
INSERT @CustomerOrder SELECT a.SalesOrderID, a.CustomerID, a.OrderDate, a.DueDate, c.Name, b.OrderQty FROM Sales.SalesOrderHeader a INNER JOIN Sales.SalesOrderDetail b ON a.SalesOrderID = b.SalesOrderID INNER JOIN Production.Product c ON b.ProductID = c.ProductID WHERE a.OrderDate = @MaxOrderDate AND a.CustomerID = @CustomerID RETURN END GO
In the existing query window, type, highlight, and execute the following code to test the function:
SELECT * FROM Sales.GetLastShippedCustomerOrder(11000) GO SELECT * FROM Sales.SalesOrderHeader WHERE CustomerID = 11000 GO
Lesson Summary
You can create scalar functions, inline table-valued functions, and multi-statement table-valued functions. With the exception of inline table-valued functions, the function body must be enclosed within a BEGIN. . .END block. All functions must terminate with a RETURN statement. Functions are not allowed to change the state of a database or of a SQL Server instance.
Programming Microsoft SQL Server with T-SQL User-Defined Stored Procedures, Functions, Triggers, and Views
Lesson 3: triggers
Triggers are a special type of stored procedure that automatically execute when a DML or DDL statement associated with the trigger is executed. In this lesson, you learn how to create DML triggers that execute when you add, modify, or remove rows in a table. You also learn how to create DDL triggers that execute when DDL commands are executed or users log in to a SQL Server instance.
After this lesson, you will be able to:
Create and alter DML triggers. Create and alter DDL triggers.
Estimated lesson time: 20 minutes
DML Triggers
Although a trigger is a programmable object that you create, you can t execute a trigger directly. DML triggers are created against a table or a view and are defined for a specific event: INSERT, UPDATE, or DELETE. When you execute the event for which a trigger is defined, SQL Server automatically executes the code within the trigger, which also is known as firing the trigger. The generic syntax for creating a trigger is
CREATE TRIGGER [ schema_name . ]trigger_name ON { table | view } [ WITH <dml_trigger_option> [ ,...n ] ] { FOR | AFTER | INSTEAD OF } { [ INSERT ] [ , ] [ UPDATE ] [ , ] [ DELETE ] } [ WITH APPEND ] [ NOT FOR REPLICATION ] AS { sql_statement [ ; ] [ ,...n ] | EXTERNAL NAME <method specifier [ ; ] > }
When a trigger is defined as AFTER, the trigger fires after the modification has passed all constraints. If a modification fails a constraint, such as a check constraint, primary key constraint, or foreign key constraint, the trigger is not executed.
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