Execute a query over all schemas on a postgres db

query_schemas.sql

DO $$
   DECLARE s record;
   BEGIN
    FOR s IN SELECT n.nspname AS schema
                FROM pg_catalog.pg_namespace AS n
                WHERE n.nspname NOT LIKE 'pg_%'  AND n.nspname <> 'information_schema'
    LOOP
       RAISE NOTICE '%', s;
       EXECUTE FORMAT('<QUERY ON %I>', s.schema);
    END LOOP;
END; $$;