On this first point — 'Get the Number of Updated and Inserted Rows in an Upsert' — unfortunately this `xmax` method is not always reliable and there does not se

On this first point — 'Get the Number of Updated and Inserted Rows in an Upsert' — unfortunately this `xmax` method is not always reliable and there does not seem to be any reliable alternative. I posted to pgsql-hackers about this problem here: https://www.postgresql.org/message-id/DE57F14C-DB96-4F17-9254-AD0AABB3F81F%40mackerron.co.uk https://www.postgresql.org/message-id/DE57F14C-DB96-4F17-925...