What is Stored Procedure and how to use it on .aspx page?

1. Stored Procedure
By Deepak Sharma
Software Developer

2. What is Stored Procedure?
• A stored procedure is a group of sql
statements that has been created and stored
in the database.
• Stored procedure will accepts input
parameters so that a single procedure can be
used over network by several clients using
different input data.

3. Benefit of Stored Procedure
• Stored procedure will reduce network traffic
and increase the performance.
• If we modify stored procedure all clients will
get the updated stored procedure.

4. Types of Stored Procedure
1. System Stored Procedure
2. User Defined Stored Procedure
Types of User Defined Stored Procedure:-
1. Non Parameterized Stored Procedure
2. Parameterized Stored Procedure

5. --¤ USER DEFINED PROCEDURE-"NON
PARAMETERIZED STORED
PROCEDURE"
Firstly we have to create table:-
• create table contact(id int,name nvarchar(15),age int)
• select * from contact
• insert into contact select 1,'Deepak',23 union all select 2,'Shipra',23
union all select 3,'Richa',23 union all select 4,'Rashi',23

6. --¤ USER DEFINED PROCEDURE-"NON
PARAMETERIZED STORED
PROCEDURE"
Create Procedure:-
• create proc ProcDemo_select as select * from contact
Here proc declare as a procedure and you can also write procedure.
Fore execute this procedure :-
• exec ProcDemo_select

7. --¤ USER DEFINED PROCEDURE -
"PARAMETERIZED PROCEDURE"
• create proc ProcDemo_insert(@id int, @name nvarchar(15), @age int) as insert into
contact values(@id,@name,@age)
• exec ProcDemo_insert 4,'Aryan',23
• --or
• --ProcDemo_insert 5,'Hello',23
• exec ProcDemo_select
• -------------------------------------------------------------------------------------------------------------------
• create proc ProcDemo_update(@id int,@name nvarchar(15), @age int) as update
contact set name=@name, age=@age where id=@id
• exec ProcDemo_update 4,'Radha',23
• exec ProcDemo_select
• -------------------------------------------------------------------------------------------------------------------
• create proc ProcDemo_delete(@id int) as delete from contact where id=@id
• exec ProcDemo_delete 4
• exec ProcDemo_select

8. FOR VIEW ALL OF QUERY OF
STORED PROCEDURE
• sp_helptext ProcDemo_select
• sp_helptext ProcDemo_insert
• sp_helptext ProcDemo_update
• sp_helptext ProcDemo_delete

9. FOR DELETE STORED PROCEDURE
• drop proc ProcDemo_select
• drop proc ProcDemo_insert
• drop proc ProcDemo_update
• drop proc ProcDemo_delete

10. NAMING STRORED PROCEDURE
OBJECT
So some of these may be:
• uspInsertPerson - insert a new person record
• uspGetAccountBalance - get the balance of an account
• uspGetOrderHistory - return list of orders

11. STORED PROCEDURE USING TRY & CATCH BLOCK-:-
• CREATE PROCEDURE ProcDemo_TryCatch AS BEGIN TRY
SELECT * from contact
END TRY
BEGIN CATCH
SELECT ERROR_NUMBER() AS ErrorNumber, ERROR_SEVERITY() AS
ErrorSeverity, ERROR_STATE() AS ErrorState, ERROR_PROCEDURE() AS
ErrorProcedure, ERROR_LINE() AS ErrorLine, ERROR_MESSAGE() AS
ErrorMessage;
END CATCH
exec ProcDemo_TryCatch
FOR CALCULATING AVERAGE
• create proc ProcedureAverage as select AVG(id) as Average from contact
• exec ProcedureAverage

12. USING STORED PROCEDURE WITH ASP.NET
PAGE WITH TRANSACTION ON .ASPX PAGE-:-
create table test(id int,name varchar(20))
select * from test
insert test select 1,'Deepak' union all select 2,'Rashi'
create proc sp_Test(@id int,@name varchar(20)) as
begin try
insert into test values(@id,@name)
END TRY
BEGIN CATCH
SELECT
ERROR_LINE(),ERROR_NUMBER(),ERROR_PROCEDURE(),ERROR_SEVERITY(
),ERROR_STATE(),ERROR_MESSAGE();
END CATCH
drop proc sp_Test

13. allow a developer to work with transaction with two simple statement:
¤ Begin Transaction
¤ Commit Transaction
ADO.NET TRANSACTION:-
con.Open(); SqlTransaction trans; trans = con.BeginTransaction();
try
{
cmd = new SqlCommand("sp_Test", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@id", SqlDbType.Int).Value = txtID.Text;
cmd.Parameters.AddWithValue("@name", SqlDbType.VarChar).Value = txtName.Text.ToString();
cmd.Transaction = trans;
cmd.ExecuteNonQuery();
trans.Commit();
}
catch
{
trans.Rollback();
Label1.Text = "Insert Fail";
}
con.Close(); con.Dispose();

14. Thanks
By Deepak Sharma
Software Developer