On Thursday, July 13, 2017, ProPAAS DBA <dba@propaas.com> wrote:
2) where can I find a complete list of the tg_ variables? I see this list:
https://www.postgresql.org/docs/9.4/static/plpgsql-trigger.html
which includes TG_NAME. OLD, NEW, etc but tg_tag and tg_event are not in the list. Are there other variables I can reference?
They are listed at the bottom of the page you linked to.