Greg Dodd wants the usual order:
If you’ve done work with stored procedures, you are probably aware that stored procedures have parameters, and that the parameters can be defaulted when you declare them. I was recently caught out due to some application code that checked when a parameter was specified for a stored procedure, if the value for the parameter was NULL then pass in the keyword DEFAULT. The Code assumed that if I had gone to the effort of specifying the parameter but not the value, that I must want the default value of the Stored Procedure. I had expected it would pass in the SQL NULL keyword.
Read on to see what actually happens and how you can use a default value.