var (
		// clone statement
		tx  = db.getInstance().Session(&Session{Context: db.Statement.Context, NewDB: db.clone == 1})
		opt *sql.TxOptions
		err error
	)

	if len(opts) > 0 {
		opt = opts[0]
	}

	switch beginner := tx.Statement.ConnPool.(type) {
	case TxBeginner:
		tx.Statement.ConnPool, err = beginner.BeginTx(tx.Statement.Context, opt)
	case ConnPoolBeginner: