optional paramenters in a procedure

Question

i want to have optional paremeters in the procedure. I want give a user an oppurtunity to enter a one single day or a date range. Like the paremeter being 07/05/2011 or a date range of 07-05-2011 to 07-10-2011, is there a way that i can do it ?

 create procedure deletedata
    @transactionalday varchar 

 begin 
 as

    delete  from atable where transactionalday = @transactionalday

  go

Answer 1

Just specify the default value for each parameter in the declaration...

create proc deletedata
  @transactionalday varchar = null,
  @beginrange datetime = null,
  @endrange datetime = null,
AS

use them appropriately in the code...

if @transactionalday is null
begin
    delete from atable where transactionalday between @beginrange and @endrange;
  end
else
  begin
    delete from atable where transactionalday = @transactionalday;
  end

then call the procedure using the named parameters...

exec deletedata @transactionalday = 'mytransactionalday';

or

exec deletedata @begindate = mybeginningdate, @enddate = myendingdate;

Answer 2

0

Yes you can. Just add "= " for each optional parameter:

create procedure deletedata
@transactionalday varchar = '20110705'

as

begin

delete  from atable where transactionalday = @transactionalday

end

go

When you call it you can specify a value for the optional params but if you don't their default value will be used instead.

answered Sep 30 '11 at 03:05 PM

David Wimbush
4.2k ● 25 ● 29 ● 31

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optional paramenters in a procedure

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