Weeds or not? Has tiny white flowers coming

Bill_and_Ben

Is this a weed? A friend told me to leave these as they'd come into blue flowers but look like weeds to me and have tiny white flowers coming. Any ideas?

First photo of small ones but others (second photo) are about 30cm high.

Dovefromabove

Looks like Black nightshade to me ... Solanum nigrum 

https://www.gardenorganic.org.uk/weeds/black-nightshade#:~:text=Black%20nightshade%20is%20a%20native%20annual%20found%20throughout,of%20soils%20but%20prefers%20soil%20rich%20in%20nitrogen.