How to compare data between two databases in PostgreSQL?

Question

Is it possible to compare two databases with identical structure? Let say that I have two databases DB1 and DB2 and I want to check if there is a difference in data between

Answer 1

I created a tool to compare 2 live PostgreSQL databases(not dumps), table data and sequences. Pretty early days but achieved what I wanted it to do, maybe it can help you too.

https://github.com/dmarkey/pgdatadiff