java - How correctly address to specific column in Cursor?

Question

Lets assume, that we have some 2 tables in SQLite: TBL_PRODUCT and TBL_PRODUCT_ALIASES. Now, I want to query some data from joined two tables:

String sql = "SELECT " + TBL_PRODUCT + "." + C_PROD_PKEY_ID + ", " + TBL_PRODUCT_ALIASES + "." + C_PROD_ALIASES_PKEY_ID +
    " FROM " + TBL_PRODUCT + " LEFT JOIN " + TBL_PRODUCT_ALIASES + " ON " + TBL_PRODUCT + "." + C_PROD_PKEY_ID + " = " + TBL_PRODUCT_ALIASES + "." + C_PROD_ALIASES_PKEY_ID +
    " WHERE " + C_PROD_SERVER_ID + " = ? LIMIT 1";

Cursor cursor = SQLiteDataHelper.getInstance().rawQuery(sql, new String[] {"" + js_CartProduct.getLong("prod_id")});

Thats works great without any problem. And then I want to acquire some data from the returned cursor:

if (cursor.getCount() > 0) {
    cursor.moveToFirst();
    Long prodId = cursor.getLong(cursor.getColumnIndexOrThrow(TBL_PRODUCT + "." + C_PROD_PKEY_ID));
    //... Some other code
}

さて、ここに問題があります:C_PROD_PKEY_IDそしてC_PROD_ALIASES_PKEY_ID、現実の世界では同じ Strings:"_id"です。そして、結果getLong()が の必要な列からではなく long を返すのでcursor。

必要な列に正しくアドレス指定するにはどうすればよいですか? ASSQLクエリでOR/ANDを使用する以外に、cursor.getLong(0)の代わりに明確な数を使用する方法はありcursor.getLong(cursor.getColumnIndexOrThrow(TBL_PRODUCT + "." + C_PROD_PKEY_ID))ますか?

アップデート：

cursor.getColumnNames()これを返します: [_id, _id].