Android - Omit repetition in ExpandableListView

I am populating my ExpandableListView from SQLite.. The problem I am facing is that I have repeating parent/group in my ExpandableListView.

I am using the following code to populate my ExpandableListView

ExpandableListView expLV;
    Cursor mGroupsCursor;
    MyExpandableListAdapter mAdapter;
    PedometerDB mDbHelper;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.activity_history, container, false);
        expLV = (ExpandableListView) v.findViewById(R.id.expLV);
        mDbHelper = new PedometerDB(getActivity());
        fillData();

        return v;
    }

    private void fillData() {
        mDbHelper.open();
        mGroupsCursor = mDbHelper.fetchGroup();
        mGroupsCursor.moveToFirst();

        mAdapter = new MyExpandableListAdapter(mGroupsCursor, getActivity(),
                R.layout.elv_parent, R.layout.elv_child,
                new String[] { PedometerDB.KEY_MONTH },
                new int[] { R.id.tvMonth }, new String[] {
                        PedometerDB.KEY_STEPS, PedometerDB.KEY_DATE_TIME,
                        PedometerDB.KEY_DISTANCE, PedometerDB.KEY_WEATHER,
                        PedometerDB.KEY_FEELING }, new int[] {
                        R.id.tvStepsDatabase, R.id.tvDateDatabase,
                        R.id.tvDistanceDatabase, R.id.ivWeatherDatabase,
                        R.id.ivFeelingDatabase });

        expLV.setAdapter(mAdapter);
        mDbHelper.close();
    }

    public class MyExpandableListAdapter extends SimpleCursorTreeAdapter {
        public MyExpandableListAdapter(Cursor cursor, Context context,
                int groupLayout, int childLayout, String[] groupFrom,
                int[] groupTo, String[] childrenFrom, int[] childrenTo) {
            super(context, cursor, groupLayout, groupFrom, groupTo,
                    childLayout, childrenFrom, childrenTo);
        }

        @Override
        protected Cursor getChildrenCursor(Cursor groupCursor) {
            mDbHelper.open();
            Cursor childCursor = mDbHelper.fetchChildren(groupCursor
                    .getString(groupCursor.getColumnIndex("month")));
            childCursor.moveToFirst();
            mDbHelper.close();
            return childCursor;
        }
    }

PedometerDB:

public Cursor fetchGroup() {
        String query = "SELECT * FROM " + PEDOMETER_TABLE;
        return ourDatabase.rawQuery(query, null);
    }

    public Cursor fetchChildren(String month) {
        String query = "SELECT * FROM " + PEDOMETER_TABLE + " WHERE "
                + KEY_MONTH + " = '" + month + "'";
        return ourDatabase.rawQuery(query, null);
    }