Question

您好我试图更新数据库中的表，但是我收到了我的列不存在的错误。该表是之前成功创建的。我能够获取信息并操纵它们但我无法更新我的编辑活动这是我的部分代码：

//job_cost table------------------------------------------------
    public static final String KEY_JOBCOSTID = "jobcostID";
    public static final String KEY_JOBCOSTHOURSTREMA = "jobcostHourStrema";
    public static final String KEY_JOBCOSTGROUNDTYPE = "jobcostGroundType";
    public static final String KEY_JOBCOSTPETROL = "jobcostPetrol";
    public static final String KEY_JOBCOSTOIL = "jobcostOil";
    public static final String KEY_JOBCOSTMAINTENANCE = "jobcostMaintenance";
    public static final String KEY_JOBCOSTOTHEREXPENSES = "jobcostOtherExpenses";
    public static final String KEY_JOBCOSTFINAL = "jobcostFinal";

db.execSQL("CREATE TABLE " + DATABASE_JOBCOSTTABLE + "("
                    + KEY_JOBCOSTID + " INTEGER PRIMARY KEY autoincrement , "
                    + KEY_JOBCOSTHOURSTREMA + " DOUBLE , "
                    + KEY_JOBCOSTGROUNDTYPE + " TEXT , "
                    + KEY_JOBCOSTPETROL + " DOUBLE , "
                    + KEY_JOBCOSTOIL + " DOUBLE , "
                    + KEY_JOBCOSTMAINTENANCE + " DOUBLE , "
                    + KEY_JOBCOSTFINAL + " DOUBLE , "
                    + KEY_JOBCOSTOTHEREXPENSES + " DOUBLE  )");
        }

public boolean updateJobCost(Cost costTemp,String jobForEdit){
        ContentValues cv = new ContentValues();

        cv.put( "KEY_JOBCOSTHOURSTREMA" , costTemp.getHourStrema());
        cv.put( "KEY_JOBCOSTGROUNDTYPE" , costTemp.getGroundType());
        cv.put( "KEY_JOBCOSTPETROL" , costTemp.getPetrol());
        cv.put( "KEY_JOBCOSTOIL" , costTemp.getOil());
        cv.put( "KEY_JOBCOSTMAINTENANCE" , costTemp.getMaintenance());
        cv.put( "KEY_JOBCOSTOTHEREXPENSES" , costTemp.getOtherExpenses());
        cv.put( "KEY_JOBCOSTFINAL" , costTemp.getCost());
        //cv.put(key, value)
        ourDatabase.updateWithOnConflict(DATABASE_JOBCOSTTABLE, cv, KEY_JOBCOSTID + "=" + jobForEdit, null, DATABASE_VERSION);
        return false;
    }

Answer 1

在您的内容值中，不应引用键名常量。例如，更改

 cv.put( "KEY_JOBCOSTHOURSTREMA" , costTemp.getHourStrema());

到

 cv.put( KEY_JOBCOSTHOURSTREMA, costTemp.getHourStrema());

Answer 2

您可能需要删除更新名称中的引号：

我的意思是，

cv.put( KEY_JOBCOSTHOURSTREMA , costTemp.getHourStrema());

而不是

cv.put( "KEY_JOBCOSTHOURSTREMA" , costTemp.getHourStrema());

Answer 3

您使用的是键值而不是列名。将代码更改为：

public boolean updateJobCost(Cost costTemp,String jobForEdit){
    ContentValues cv = new ContentValues();

    cv.put( KEY_JOBCOSTHOURSTREMA , costTemp.getHourStrema());
    cv.put( KEY_JOBCOSTGROUNDTYPE , costTemp.getGroundType());
    cv.put( KEY_JOBCOSTPETROL , costTemp.getPetrol());
    cv.put( KEY_JOBCOSTOIL , costTemp.getOil());
    cv.put( KEY_JOBCOSTMAINTENANCE , costTemp.getMaintenance());
    cv.put( KEY_JOBCOSTOTHEREXPENSES , costTemp.getOtherExpenses());
    cv.put( KEY_JOBCOSTFINAL , costTemp.getCost());
    //cv.put(key, value)
    ourDatabase.updateWithOnConflict(DATABASE_JOBCOSTTABLE, cv, KEY_JOBCOSTID + "=" + jobForEdit, null, DATABASE_VERSION);
    return false;
}

Answer 4

试试这个： - 删除双引号（“”）

Android数据库“没有这样的专栏”

4 个答案: