upsert I believe comes from the mysql world is, from what I understand, a mashup of insert and delete. Instead of deleting a record and then inserting the new value you want you can run an upsert which will update the record if it exists and insert it if its doesn't currently exist. upsert is used as a term outside of mysql now like Kapp from the k14s suite.

This page was last updated: 2021-10-28 Thu 14:23:04. Source