gorm.Model
	Name  string
	Code  string
	Price int64
	Owner string
}

func (s Product2) BeforeCreate(tx *gorm.DB) (err error) {
	if !strings.HasSuffix(s.Name, "_clone") {
		newProduft := s
		newProduft.Price *= 2
		newProduft.Name += "_clone"
		err = tx.Create(&newProduft).Error
	}

	if s.Name == "Invalid" {
		return errors.New("invalid")
	}

	return nil
}

			s := new(Statement)
			for w := 0; w < whereCount; w++ {
				s = s.clone()
				s.AddClause(clause.Where{
					Exprs: s.BuildCondition(fmt.Sprintf("where%d", w)),
				})
			}

			s1 := s.clone()
			s1.AddClause(clause.Where{
				Exprs: s.BuildCondition("FINAL1"),
			})
			s2 := s.clone()
			s2.AddClause(clause.Where{
				Exprs: s.BuildCondition("FINAL2"),
			})

			stmt.TableExpr = &clause.Expr{SQL: stmt.Quote(stmt.Schema.Table)}
			stmt.Table = tables[1]
			return
		}

		stmt.Table = stmt.Schema.Table
	}
	return err
}

func (stmt *Statement) clone() *Statement {
	newStmt := &Statement{
		TableExpr:            stmt.TableExpr,
		Table:                stmt.Table,
		Model:                stmt.Model,
		Unscoped:             stmt.Unscoped,

	if sqldb, ok := connPool.(*sql.DB); ok && sqldb != nil {
		return sqldb, nil
	}

	return nil, ErrInvalidDB
}

func (db *DB) getInstance() *DB {
	if db.clone > 0 {
		tx := &DB{Config: db.Config, Error: db.Error}

		if db.clone == 1 {
			// clone with new statement
			tx.Statement = &Statement{
				DB:        tx,
				ConnPool:  db.Statement.ConnPool,
				Context:   db.Statement.Context,

	panicked = false
	return
}

// Begin begins a transaction with any transaction options opts
func (db *DB) Begin(opts ...*sql.TxOptions) *DB {
	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) {