android – 为什么ORDER BY不能在Sqlite查询中工作

Android中的sqlite表创建：

// Contacts table name
private static final String TABLE_CHAL = "CD";

// Contacts Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_CHAL = "chal";
private static final String KEY_DATE = "date";

String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CHAL + "("
        + KEY_ID + " INTEGER PRIMARY KEY," + KEY_CHAL + " TEXT,"
        + KEY_DATE + " TEXT)";
db.execsql(CREATE_CONTACTS_TABLE);

查询(按KEY_DATE排序)：

Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_CHAL + " ORDER BY [" + KEY_DATE + "] ASC", null);

以上似乎不起作用.

在完成订单之前,我是否必须将KEY_DATE转换为日期.

解决方法:

您可以使用

SELECT * FROM cd ORDER BY datetime(substr(date, 7, 4) || '-' || substr(date, 4, 2) || '-' || substr(date, 1, 2))