Question

I have a problem with my query

public ArrayList<String> getUniqueYears(String TABLE_NAME) {

      ArrayList<String> content = new ArrayList<String>();
      final String[] cat = new String[] {KEY_YEAR};

      Cursor cursor = myDatabase.query(true, TABLE_NAME, cat, null, null, null, null, KEY_YEAR, null);


              if (cursor.moveToFirst()) {
                 do {

                      content.add(cursor.getString(0));
                 } while(cursor.moveToNext());
            }

      cursor.close();
      return content;
}

when i call the function returns me this:

[111, 1111, 124, 1242, 1345, 1943, 2345, 345]

thank’s

Answer 1

It is currently sorting by KEY_YEAR as if those where strings:

1. 111 before 1111, because 111 and 1111 are equal, but the second one has an extra character, thus i is “numerically greater” than the first one.
2. 1111 before 124, because 1111 and 124 are equal, but 1111 is “numerically lower” than 124. The rest is not used for sorting this pair

And so and so….

How are you storing KEY_YEAR? It should be a NUMBER