I'm not sure if this can be considered a bug or not, but it is perhaps unexpected. I found that when using a view that is simply select * from table, then doing INSERT ... ON CONFLICT ON CONSTRAINT constraint_name on that view, it does not find the constraint and errors out. But it does find the constraint if one lists the columns instead.
I did not find any mention of this specifically in the docs, or any discussion on this topic after a brief search, and I have already asked my stakeholder to change to using the column list as better practice anyway. But in any case, I wanted to know if this is a known issue or not.
Thanks!
