SELECT 
			t.*
			,(SELECT btt2.text
				FROM merkblaetter as t2,bausteintitel as bt2, bausteintexte as btt2, mb_bt_btt AS mn2
				WHERE t.id = mn2.merkblatt_id AND
					mn2.bausteintitel_id = bt2.id AND
					bt2.name = 'Entsprechende Rahmenrezeptur (CPNP)' AND
					mn2.bausteintext_id = btt2.id
				GROUP BY mn2.merkblatt_id) as btt_text
			
		FROM 
			merkblaetter_gruppen AS mb_gp, 
			merkblaetter as t 
		
		WHERE 
			t.id = mb_gp.merkblatt_id 
		AND 
			mb_gp.gruppe_id = 5 
		AND 
			t.visibility = 'show' 
		ORDER BY 
			get_pdf  
		LIMIT 
		0, 20