type Mycount struct {
    Usercount uint
}

    //  關於Gorm執行原生SQL
    // **********語句欄位要小寫************
    // ***********查詢用db.Raw,其他用db.Exec
    // *********** 欄位大小寫要對應上 **************
    // *************** 注意要 defer rows.Close()
    var Mycount Mycount
    rows,_:= db.Debug().Raw("select Count(1) as Usercount from Users
 
").Rows()
    defer rows.Close()
    for rows.Next() {
        rows.Scan(&Mycount.Usercount)
    }
    var users []User
    //   查詢 執行用Scan 和Find 一樣
    db=db.Raw("select uid,user_name,age from Users").Scan(&users)
    //db=db.Raw("select uid,user_name,age from Users").Find(&users)
    fmt.Println("
 
Users",users)
    //  更新和刪除.插入用 Exec
    db= db.Exec("update Users set user_name='def' where uid=?",1)
    fmt.Println("更新了",db.RowsAffected,"條資料")
    db= db.Exec("delete from Users where uid=?",2)
    fmt.Println("更新了",db.RowsAffected,"條資料")
    return  int32(Mycount.Usercount)