Create stored procedure to show employee details as per filtered range in sql

This is nice example of Stored procedure . You can get Idea that how to Create stored procedure to get employee details as per filtered parameter range of sql. To become SQL Expert we should required to expert in Stored procedure and parameter terms.

SET ANSI_NULLS ON
Go
SET QUOTED_IDENTIFIER ON
Go CREATE PROCEDURE spx_GetEMploye
@Filter VARCHAR(50) AS BEGIN
SET NOCOUNT ON;
IF @Filter = 'ALL'
SELECT ContactName, City, Country, PostalCode FROM Employee
ELSE IF @Filter = '10'
SELECT TOP 10 ContactName, City, Country, PostalCode FROM Employee
ELSE SELECT ContactName, City, Country, PostalCode FROM Employee WHERE mailto:Country=@Filter
END GO