Throw error if attempting to delete from table without physical columns

[Tishj]

Fixes issue #4685

This would previously die in DataChunk::Initialize because it would attempt to create a datachunk without any types.
Since this operation doesn't do anything and in my opinion isn't valid, I have opted to turn this into an error.

[Mytherin]

Thanks for the PR!

Perhaps the error should instead be on creating a table with only generated columns? I can imagine multiple issues occurring with tables without physical columns (e.g. what about inserts? updates? alter statements?). Such tables don't seem particularly useful to me either.

[Tishj]

Ah good point, address the problem at the source!
I will do that instead 👍

[Mytherin]

Thanks! LGTM

[Tishj]

I'm not entirely sure why this regression is failing, when I run it locally it also happens for the first init_db (the OLD_DB)
So it seems like it wasn't able to find the old database file ?

[Mytherin]

Likely a HTTP error, will rerun