Passing comma-separated value from .NET to stored procedure using the value in “IN” SQL function

Question

I have an SQL query similar to the following:

create procedure test
(
   @param1 nvarchar(max)
)
as
begin
    select * from table where column1 in (@param1)
         


        

Answer 1

I don't think the problem is in the values you are passing. @param1 is just a string.

You need to address this in your procedure. Your select statement will not be able to recognize the values in you IN clause. One solution is to take the comma-separated string and insert each record into a table variable Explained Here

If your table variable is table @param_list, you procedure test looks like:

create procedure test ( @param1 nvarchar(max) ) 
as begin 
select * from table where column1 in (Select thefield from @param_list); 
end