parameters in sql code example

Example 1: set parameter sql server

USE AdventureWorks2012;  
GO  
-- Passing values as constants.  
EXEC dbo.uspGetWhereUsedProductID 819, '20050225';  
GO  
-- Passing values as variables.  
DECLARE @ProductID int, @CheckDate datetime;  
SET @ProductID = 819;  
SET @CheckDate = '20050225';  
EXEC dbo.uspGetWhereUsedProductID @ProductID, @CheckDate;  
GO  
-- Try to use a function as a parameter value.  
-- This produces an error message.  
EXEC dbo.uspGetWhereUsedProductID 819, GETDATE();  
GO  
-- Passing the function value as a variable.  
DECLARE @CheckDate datetime;  
SET @CheckDate = GETDATE();  
EXEC dbo.uspGetWhereUsedProductID 819, @CheckDate;  
GO

Example 2: functions with parameters SQL

USE tempdb;
GO

DROP FUNCTION IF EXISTS dbo.GetOrderID;
DROP TABLE IF EXISTS OrdersTest;
GO

CREATE TABLE OrdersTest (OrderID int IDENTITY, OrderType int, Qty int, ServiceSpeed int);
GO

CREATE FUNCTION GetOrderID
(
	@OrderType int = 0,
	@ServiceSpeed int = 0,
	@Qty int = 0
)
RETURNS int AS
BEGIN
	RETURN
	(
		SELECT
			TOP 1 OrderID
		FROM		OrdersTest
		WHERE		OrderType = @OrderType
		AND			ServiceSpeed = @ServiceSpeed
		AND			Qty = @Qty
		
	);
END
GO

Example 3: functions with parameters SQL

SET @OrderID = dbo.GetOrderID (default, default, default);

Example 4: functions with parameters SQL

DECLARE
	@OrderID int = NULL,
	@OrderType int = 1,
	@Qty int = 2,
	@ServiceSpeed int = 3;

INSERT INTO OrdersTest (OrderType, Qty, ServiceSpeed)
	VALUES (@OrderType, @Qty, @ServiceSpeed);

EXEC @OrderID = dbo.GetOrderID
	@OrderType = @OrderType,
	@Qty = @Qty,
	@ServiceSpeed = @ServiceSpeed;

SELECT @OrderID 'Using EXEC Syntax';