code: func (session *Session) Exec(sqlorArgs ...interface{}) (sql.Result, error) {
  	if session.isAutoClose {
  		defer session.Close()
  	}
  
  	if len(sqlorArgs) == 0 {
  		return nil, ErrUnSupportedType
  	}
  
  	sqlStr, args, err := convertSQLOrArgs(sqlorArgs...)
  	if err != nil {
  		return nil, err
  	}
  
  	return session.exec(sqlStr, args...)
  }
docs: // Exec raw sql