Insert data in sql server according to position from asp page

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Hi I am using sql server table to store data
There is an file upload control and one text box for user
In fileupload he will choose file and in position text box he will enter position, and that position will be stored in column named 'position'
I want to check if user is uploading file and inserting into position on which some file already exist... if so I want to increase all positions by 1 which is larger than than position
can u suggest code
thanks

Posted 14-Oct-13 2:41am

Imadoddin

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Thanks7872 14-Oct-13 8:53am

Not at all clear. What do you mean by "increase all positions by 1 which is larger than position"?

JoCodes 14-Oct-13 12:01pm

Please elaborate the question with what exactly you want

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S. M. Ahasan Habib · Accepted Answer · 2013-10-14T07:19:00

you just write a stored procedure and check and update that in side that sp. You may use Business logic/service layer to do the same thing

SQL

create proc UpdateFilePosition
(
   @FileName varchar(10)
   ,@ProposedPosition int
)
AS
begin
  if exitsts(select * from MyPositionsTable WHERE FileName = @FileName AND Position = @ProposedPosition)
  begin
       UPDATE MyPositionsTable SET Position += 1 WHERE   FileName = @FileName AND Position >= @ProposedPosition;       
  end
  insert MyPositionsTable(FileName, Position) values (@FileName, @ProposedPosition); 

end

Stored procedure check the provided file name and position is exists in table or not if found then it increase all positions by 1 started from proposed position. That way the proposed position will be unique.