Question

From my ASP.NET application I am calling an INSERT stored procedure, there is a default value for one of the columns in the table that the INSERT procedure places the data into. How do I specify that I want the default value to be used instead? (Or do I have to specify the actual default value in my parameters)

SITUATIONAL TABLE:

Column 1: int
Column 2: string
Column 3: int default -1

SITUATIONAL STORED PROCEDURE

INSERT INTO TABLE
  (Column 1, Column 2, Column 3)
VALUES
  (?, ?, ?)

SITUATIONAL ASP.NET CODE

create paramter (Column 1, 12)
if (x = 0)
 {create parameter (Column 2, "test")}
else
 {
   create parameter (Column 3, 24)
   create parameter (Column 2, DBNull.Value)
 }

Thank you for your help

Answer 1

Leave the column out of the insert clause, and you will get the default.

For example in your procedure:

IF condition
  INSERT INTO Y (X) VALUES(1); -- will use defaults
ELSE
  INSERT INTO Y (W, X) VALUES(1, 2) -- won't use default for W