c# - Table Value optional parameter

Question

Is it possible to create a procedure with a table value parameter as an optional parameter.

I tried the following code:

CREATE PROCEDURE SP
@Table testteype = null READONLY
AS 
....

But I get this error:

Operand type clash: void type is incompatible with test type 

ps: I use sql server with C#.Net

Answer 1

Table-Valued parameters always have an implicit value of an empty table. So you can actually call that procedure without any parameters and it would execute but the table would be empty.

So it doesn't really make sense to label a table-value parameter with a default value. Remove the "=null", check the table contents, and you should be good to go.