get data from sqlite and display in multi column listview

i want to get data from sqlite and display in multicolumn listview i don't have much idea of using listview i used following code but i'm getting exception that "coulmn '_id' does not exist", although i have not use _id anywhere in my whole code. Please guide me what is the problem.

public class PlanningList_activity extends Activity{

 Db_sqlite dbHelper ;
 private SimpleCursorAdapter dataAdapter;

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.planning_list);

  dbHelper = new Db_sqlite(PlanningList_activity.this);
  displayListView();
 }

 private void displayListView() {

      Cursor cursor = dbHelper.fetchPlanningData();

      // The desired columns to be bound
        String[] columns = new String[] {
        dbHelper.CONTACTS_COLUMN_PLAN_NO,
        dbHelper.CONTACTS_COLUMN_PLAN_DATE,
        dbHelper.CONTACTS_COLUMN_MON,
        dbHelper.CONTACTS_COLUMN_dr_code,
        dbHelper.CONTACTS_COLUMN_MORN_EVEN,
        dbHelper.CONTACTS_COLUMN_ff_code,
      };

        int[] to = new int[] { 
                R.id.Plan_no,
                R.id.plan_date,
                R.id.mon,
                R.id.doc_code,
                R.id.morn_even,
                R.id.ff_code,
        };

        dataAdapter = new SimpleCursorAdapter(
                this, (R.layout.single_lv_item),cursor,columns,to,0);
        ListView listView = (ListView) findViewById(R.id.listView1);
        listView.setAdapter(dataAdapter);
 } 

method for fetching values from database

 public Cursor fetchPlanningData() {

      SQLiteDatabase db = getReadableDatabase();
      Cursor mCursor = db.query(DOC_PLANNING_TABLE_NAME, new String[]   {COLUMN_PLAN_NO,COLUMN_PLAN_DATE,COLUMN_MON,COLUMN_dr_code,COLUMN_MORN_EVEN,COLUMN_ff_code}, 
        null, null, null, null, null,null);
       if (mCursor != null) {
           mCursor.moveToFirst();
          }
          return mCursor;
 }