On Thu, Nov 25, 2021 at 9:13 AM Shaozhong SHI <shishaozhong(at)gmail(dot)com>
wrote:
> Function difference not found.
>
> Should an extension created for finding it?
>
>
It's an operator (there may be a backing function that isn't documented)...
SELECT 5 - 2; -- yields 3, the difference of 5 and 2.
David J.