Re: CAST(... ON DEFAULT) - WIP build on top of Error-Safe User Functions

On Mon, 19 Dec 2022 at 17:57, Corey Huinker <corey(dot)huinker(at)gmail(dot)com> wrote:

>
> Attached is my work in progress to implement the changes to the CAST()
> function as proposed by Vik Fearing.
>
> CAST(expr AS typename NULL ON ERROR)
> will use error-safe functions to do the cast of expr, and will return
> NULL if the cast fails.
>
> CAST(expr AS typename DEFAULT expr2 ON ERROR)
> will use error-safe functions to do the cast of expr, and will return
> expr2 if the cast fails.
>

Is there any difference between NULL and DEFAULT NULL?