public function actionDrop()
    {
        $stdout = '';
        foreach ($this->db->schema->getTableSchemas() as $table) {
            if ($table->name === $this->migrationTable) {
                continue;
            }
            $stdout .= static::generateDropTable($table->name);
            if (!empty($table->foreignKeys)) {
                $stdout .= ' // fk: ';

                foreach ($table->foreignKeys as $fk) {
                    foreach ($fk as $k => $v) {
                        if (0 === $k) {
                            continue;
                        }
                        $stdout .= "$k, ";
                    }
                }
                $stdout = rtrim($stdout, ', ');
            }
            $stdout .= "\n";
        }
        $this->stdout($stdout);
    }