SQL server自动增量字段

时间:2018-02-08 17:09:43

标签: sql sql-server database

我有这张桌子:

public class MainActivity extends AppCompatActivity {

    Button button;
    TextView textView;

    ArrayList<Integer> list = new ArrayList<Integer>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        button = (Button)findViewById(R.id.button);
        textView = (TextView)findViewById(R.id.textView);

        list.add(0);
        list.add(1);
        list.add(2);
        list.add(3);

    }

    public void button(View view) {
        Random rand = new Random();
        int randomElement = list.get(rand.nextInt(list.size()));
        if (list.isEmpty()) {
            textView.setText("Empty");
        } else if (randomElement == 0) {
            textView.setText("Red");
            list.remove(randomElement);
        } else if (randomElement == 1) {
            textView.setText("Blue");
            list.remove(randomElement);
        } else if (randomElement == 2) {
            textView.setText("Yellow");
            list.remove(randomElement);
        } else if (randomElement == 3) {
            textView.setText("Green");
            list.remove(randomElement);
        }
    }
}

我从另一个数据库复制它,我希望它将每一行增加1,目前它将每个新行增加1但是当达到100时它变为1000,当达到1099时它变为2000而不是1100,1101所以上 .... 如何解决它连续增加1?

0 个答案:

没有答案