android.database.sqlite.SQLiteException: no such column: T.STATE_ID (code 1):

[raja mishra]

public static List<String> getStates(Context ctx) {

    List<String> allStates = new ArrayList<>();
    String sql = "SELECT stateName FROM (SELECT stateName, COUNT(stateName) as count from Branch GROUP BY stateName) WHERE count = 1";
Cursor c =  Manager.getDb(ctx).rawQuery(sql, null);
    c.moveToFirst();
    while (!c.isAfterLast()) {
        String stateName = c.getString(0);
        allStates.add(stateName);
        c.moveToNext();
    }
    c.close();
    return allStates;
}

[raja mishra]

Entity branch = schema.addEntity("Branch");
branch.setTableName("branch");
branch.addIdProperty();
branch.addStringProperty("stateId");
branch.addStringProperty("stateName");
branch.addStringProperty("cityId");
branch.addStringProperty("city");
branch.addStringProperty("brlocflag");
branch.addStringProperty("landlineno1");
branch.addStringProperty("pincode");
branch.addStringProperty("branchadd1");
branch.addStringProperty("branchadd2");
branch.addStringProperty("lat");
branch.addStringProperty("_long");
branch.addStringProperty("branchid");
branch.addStringProperty("weekdays");
branch.addStringProperty("saturday");

new DaoGenerator().generateAll(schema, "../HDFC/app/src/main/java/");

Why this error ??