return nil, err
		}
		return driver.ResultNoRows, nil
	case "INSERT":
		return s.execInsert(args, true)
	case "NOSERT":
		// Do all the prep-work like for an INSERT but don't actually insert the row.
		// Used for some of the concurrent tests.
		return s.execInsert(args, false)
	}
	return nil, fmt.Errorf("fakedb: unimplemented statement Exec command type of %q", s.cmd)
}