sql declare variable
-- Declare the variable to be used.
DECLARE @MyCounter int;
-- Initialize the variable.
SET @MyCounter = 0;sql declare variable
-- Declare the variable to be used.
DECLARE @MyCounter int;
-- Initialize the variable.
SET @MyCounter = 0;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;
GOAssign value to var in SQL
DECLARE @EmpIDVariable int;
SELECT @EmpIDVariable = MAX(EmployeeID)
FROM HumanResources.Employee;variables in select statement in sql server
USE AdventureWorks2014;
GO
DECLARE @MyVariable int;
SET @MyVariable = 1;
-- Terminate the batch by using the GO keyword.
GO
-- @MyVariable has gone out of scope and no longer exists.
-- This SELECT statement generates a syntax error because it is
-- no longer legal to reference @MyVariable.
SELECT BusinessEntityID, NationalIDNumber, JobTitle
FROM HumanResources.Employee
WHERE BusinessEntityID = @MyVariable;Copyright © 2021 Codeinu
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