pg_event_trigger stores event triggers.
See Chapter 39 for more information.
|Trigger name (must be unique)|
|Identifies the event for which this trigger fires|
|Owner of the event trigger|
|The function to be called|
| Controls in which session_replication_role modes
the event trigger fires.
|Command tags for which this trigger will fire. If NULL, the firing of this trigger is not restricted on the basis of the command tag.|