How to handle dynamic sql parameters

Question

What is a good way to handle dynamic sql parameters?

I have a search form that takes in a whole bunch of different search parameters. If the parameters are empty an

Answer 1

One of the things that can be done is check whether the parameter was passed to your stored procedure. You can do it like this:

create procedure my_procedure (
  @param1 as int = null
  @param2 as int = null
) as 
begin

   select field1, field2, fieldn
     from table
    where ((@param1 is null) or (field2 = @param1))
      and ((@param2 is null) or (field2 = @param2))
end 

I'd rather do this on sql procedure than in the application tho