I have spent nearly 6 hours trying to work out how to do this. I am new to APEX, but all articles/videos I find relate to earlier versions and I can't fathom out how to translate them to the current version. I have read Oracle's docs, but I am none the wiser.
I have a simple IR report with an amount field that I want to total (sum) at the end of the report. I have seen suggestions about adding a UNION clause in the SQL to achieve this, but I can't believe this is required for a reporting product.
Sorry, but I need something explicit including navigation paths to all functionality I need.