Question

当我第一次尝试创建表时，我总是收到此错误消息：

sqlite返回：错误代码= 1，msg =仅允许AUTOINCREMENT 在INTEGER PRIMARY KEY

我的代码如下所示：

// debuggin标识符 private static final String TAG = DatabaseOpenHandler.class.getSimpleName（）;

// name and verison of the database
private static final String DATABASE_NAME = "OpenConfApp";
private static final int DATABASE_VERSION = 1;

// name and attributes of the table notes
public static final String TABLE_NAME_NOTES = "notes";
public static final String _NOTE_ID = "_noteId";
public static final String NOTE_CONFERENCE = "conferenceId";
public static final String NOTE_DATE = "dateInMillis";
public static final String NOTE_TEXT = "noteText";

// create table notes
public static final String TABLE_NOTES_CREATE = "CREATE TABLE "
        + TABLE_NAME_NOTES + " (" + _NOTE_ID
        + "INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_CONFERENCE
        + " INTEGER, " + NOTE_DATE + " INTEGER, " + NOTE_TEXT
        + " INTEGER);";

// drop table notes
public static final String TABLE_NOTES_DROP = "DROP TABLE IF EXIST "
        + TABLE_NAME_NOTES;

public DatabaseOpenHandler(Context context) {
    super(context, DATABASE_NAME, null, DATABASE_VERSION);
}

@Override
public void onCreate(SQLiteDatabase db) {
    Log.d(TAG, "onCreate called");
    db.execSQL(TABLE_NOTES_CREATE);
}

抱歉，我是Android编程的新手。

Answer 1

+ "INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_CONFERENCE

你错过了那边的空白......

+ " INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_CONFERENCE

Answer 2

您的代码是正确的只是您在第一个整数语句之前错过了一个空格。写下：

public static final String TABLE_NOTES_CREATE = "CREATE TABLE "
    + TABLE_NAME_NOTES + " (" + _NOTE_ID
    + " INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_CONFERENCE
    + " INTEGER, " + NOTE_DATE + " INTEGER, " + NOTE_TEXT
    + " INTEGER);";

Answer 3

整数主键不需要AUTOINCREMENT，它的语义已包含在“主键”中，请参阅here。

Answer 4

由于输入错误，这是一个问题

之间没有空格

NOTE_ID和INTEGER PRIMARY KEY AUTOINCREMENT

public static final String TABLE_NOTES_CREATE = "CREATE TABLE "
        + TABLE_NAME_NOTES + " (" + _NOTE_ID
        + "INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_CONFERENCE
        + " INTEGER, " + NOTE_DATE + " INTEGER, " + NOTE_TEXT
        + " INTEGER);";

你应该在它们之间留出空间

public static final String TABLE_NOTES_CREATE = "CREATE TABLE "
        + TABLE_NAME_NOTES + " (" + _NOTE_ID
        + " INTEGER PRIMARY KEY AUTOINCREMENT, " + NOTE_CONFERENCE
        + " INTEGER, " + NOTE_DATE + " INTEGER, " + NOTE_TEXT
        + " INTEGER);";

Android创建表错误

4 个答案: