There might be stored procedures etc, but not being an expert means I'd be concerned about performance and correctness. And the point is especially for perf bec

There might be stored procedures etc, but not being an expert means I'd be concerned about performance and correctness. And the point is especially for perf because that's exactly when I want upsert: to save a lot of back and forth when inputting a lot of data. Also, not being standard means things like bulk upload Ruby gems not supporting faster methods of upload because they can't depend on stored procedures in any easy way that I can tell.