On 2018-Jun-20, Igor Korot wrote:
> [quote]
> In order to create an event trigger, you must first create a function
> with the special return type event_trigger. This function need not
> (and may not) return a value; the return type serves merely as a
> signal that the function is to be invoked as an event trigger.
> [/quote]
>
> So, the function has to be created and compiled.
Event trigger functions can be written in plpgsql. You can use
pg_event_trigger_ddl_commands() in the ddl_command_end event to obtain a
few tidbits about the DDL that was just executed.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
