Cursor siralama = db.rawQuery("SELECT * FROM kategoriler WHERE sinavadi='" + this.kategori + "' order by sinavadi ", null);
Cursor kayitlar = db.rawQuery("SELECT * FROM sinavlar WHERE kategori='" + this.kategori + "' order by id", null);
Cursor kayitlark = db.rawQuery("SELECT * FROM kategoriler WHERE id='" + this.kategori + "'", null);