From: Tom Lane <tgl@sss.pgh.pa.us>
To: kaido vaikla <kaido.vaikla@gmail.com>
cc: pgsql-admin@postgresql.org
Subject: Re: event_trigger, 'DROP SCHEMA'
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Comments: In-reply-to kaido vaikla <kaido.vaikla@gmail.com>
	message dated "Fri, 26 Jul 2024 20:32:40 +0300"
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Date: Fri, 26 Jul 2024 13:44:01 -0400
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kaido vaikla <kaido.vaikla@gmail.com> writes:
> FOR r IN SELECT * FROM pg_event_trigger_dropped_objects()
> LOOP
> execute format ('drop role IF EXISTS r_%I', r.object_name);
> END LOOP;

> kvpg2=# drop schema test;
> ERROR:  null values cannot be formatted as an SQL identifier
> CONTEXT:  PL/pgSQL function trigger_after_drop_schema() line 7 at EXECUTE

> Question, what i do wrong?

Assume that every dropped object has a name, looks like.
You would probably do well to check object_type before
trying to drop the role.

			regards, tom lane