UPDATE OR REPLACE?

Sqlite has options to handle an update that causes a duplicate key. Is there anything similar in Postgres?

This is not an UPSERT. The scenario is an UPDATE that changes some key field so that there is now a duplicate key. In Sqlite this handled as:

UPDATE OR IGNORE table SET <etc>

UPDATE OR REPLACE table SET <etc>

And so on

See https://www.sqlite.org/lang_update.html.

Can Postgres do this?

Regards

David M Bennett FACS

Andl - A New Database Language - andl.org