Detecting column changes in a postgres update trigger

Question

I have a postgres database with several tables that I want to watch for updates on, and if there\'s any updates, I want to fire a \"hey, something changed\" update. This wor

Answer 1

Another way is to exploit JSON/JSONB functions that come in recent versions of PostgreSQL. It has the advantage of working both with anything that can be converted to a JSON object (rows or any other structured data), and you don't even need to know the record type.

See my original StackOverflow post with appropriate examples.