Cannot create a new table after “DROP SCHEMA public”

The error message pops up when none of the schemas in your search_path can be found.
Either it is misconfigured. What do you get for this?

SHOW search_path;

Or you deleted the public schema from your standard system database template1. You may have been connected to the wrong database when you ran drop schema public cascade;

As the name suggests, this is the template for creating new databases. Therefore, every new database starts out without the (default) schema public now – while your default search_path probably has ‘public’ in it.

Just run (as superuser public or see mgojohn’s answer):

CREATE SCHEMA public;

in the database template1 (or any other database where you need it).

The advice with DROP SCHEMA ... CASCADE to destroy all objects in it quickly is otherwise valid.

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