On Wed, Dec 29, 2021, 4:34 PM David G. Johnston <david.g.johns...@gmail.com>
wrote:

> That isn’t how it works.  Absence is what is important.  Null is not
> absence.  As you showed, if you want nulls to be converted to defaults you
> can use coalesce.
>

Thanks sir. It seems unfortunate that there is not a way to indicate
absence of the third parameter if I need to set a value for the fourth
parameter.

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