Hi Olivier,
I have written a short note concerning the Help page for Calc's Database functions and this can be found at https://nextcloud.documentfoundation.org/s/EcAtPeE9sM9KtGM.
Please would you have a look through this note and let me know your views?
If we can agree to the outline changes that I suggest, I would be happy to implement them under your guidance.
Regards,
Steve