DO $$
DECLARE r RECORD;
BEGIN
    FOR r IN (SELECT tablename FROM pg_tables WHERE schemaname = 'public' AND tablename != 'django_migrations')
    LOOP
        RAISE NOTICE 'Truncating table %', r.tablename;
        EXECUTE 'TRUNCATE TABLE ' || quote_ident(r.tablename) || ' CASCADE';
    END LOOP;
END $$;