问如果数据类型从字符串更改为bool，则数据存储将引发错误。

EN

package main

// I have corrected all of your method names
type Appointment struct {
        ID                   string
        AppointmentDate      string
        StartTime            string
        EndTime              string
        SelectSpecialization string
        SmokingStatus        string
}

type AllOldData struct {
        Data []Appointment
}
type FixedAppointment struct {
        ID                   string
        AppointmentDate      string
        StartTime            string
        EndTime              string
        SelectSpecialization string
        SmokingStatus        bool
}

type FixedData struct {
        Data []FixedAppointment
}

func TypeFixing() FixedData {

        var OldData AllOldData
        var NewData FixedData

        OldData = GetYourAllOldData()

        for i, v := range OldData.Data {
                if v.SmokingStatus == "true" {
                        // other value exchanging
                        NewData.Data[i].SmokingStatus = true
                } else {
                        // other value exchanging
                        NewData.Data[i].SmokingStatus = false
                }
        }

        return NewData // Save the data in a new table or whatever you call it

}

func GetYourAllOldData() AllOldData {
        // A function that returns all old data
        return AllOldData{} // You must return return your all data
}