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DROP PROCEDURE <ProcedureName>

e.g.

DROP PROCEDURE Getstudentname

Declare @Studentname as nvarchar(200)   -- Declaring the variable to collect the Studentname
Declare @Studentemail as nvarchar(50)     -- Declaring the variable to collect the Studentemail
Execute GetstudentnameInOutputVariable 1 , @Studentname output, @Studentemail output
select @Studentname,@Studentemail      -- "Select" Statement is used to show the output from Procedure

Execute Getstudentname 1
Exec Getstudentname 1

/*
Case when a stored procedure doesn't returns anything
*/

/*
This Stored procedure is used to Insert value into the table tbl_students. 
*/

Create Procedure InsertStudentrecord
(
 @StudentFirstName Varchar(200),
 @StudentLastName  Varchar(200),
 @StudentEmail     Varchar(50)
) 
As
 Begin
   Insert into tbl_Students (Firstname, lastname, Email)
   Values(@StudentFirstName, @StudentLastName,@StudentEmail)
 End

/* 
Stored Procedure GetstudentnameInOutputVariable is modified to collect the
email address of the student with the help of the Alter Keyword
*/ 

Alter  PROCEDURE GetstudentnameInOutputVariable
(

@studentid INT,                   --Input parameter ,  Studentid of the student
@studentname VARCHAR (200) OUT,    -- Output parameter to collect the student name
@StudentEmail VARCHAR (200)OUT     -- Output Parameter to collect the student email
)
AS
BEGIN
SELECT @studentname= Firstname+' '+Lastname, 
    @StudentEmail=email FROM tbl_Students WHERE studentid=@studentid
END

 /* 
GetstudentnameInOutputVariable is the name of the stored procedure which
uses output variable @Studentname to collect the student name returns by the
stored procedure
*/

Create  PROCEDURE GetstudentnameInOutputVariable
(

@studentid INT,                       --Input parameter ,  Studentid of the student
@studentname VARCHAR(200)  OUT        -- Out parameter declared with the help of OUT keyword
)
AS
BEGIN
SELECT @studentname= Firstname+' '+Lastname FROM tbl_Students WHERE studentid=@studentid
END

/*  Getstudentname is the name of the stored procedure*/

Create  PROCEDURE Getstudentname(

@studentid INT                   --Input parameter ,  Studentid of the student 

)
AS
BEGIN
SELECT Firstname+' '+Lastname FROM tbl_Students WHERE studentid=@studentid 
END