getRecords fatal error:<br>Unknown column 'p.pdf' in 'order clause'<pre>
		SELECT 
			gr.* 
			,i.Recom_Picture_file 
			,i.Recom_PDF 
			,i.Recom_PDF_Link 
			,i.Recom_ArtGrBezDatenblatt as ArtGrBez
			,p.ProductFamily 
			,p.Power 
			,p.Power_UoM 
			,p.Isolation 
	

		FROM 
			(dbo_KHKArtikelgruppen as gr 
			, dbo_RECOM_Artikelgruppenzusatzinfos as i 
			,dbo_KHKArtikel as p 
			)

		WHERE 
			1=1 
		AND 
			gr.Gruppenebene != '1' 
		AND (
			(gr.Hauptartikelgruppe IN ('ECO','POWER PLUS') ) 
			OR 
			(p.ProductFamily = 'Switching Regulators R-78') 
		)
		
		AND 
			gr.Artikelgruppe = i.Artikelgruppe 
		AND 
			gr.Artikelgruppe = p.Artikelgruppe 
		AND 
			gr.Gruppenebene != '1' 
		AND 
			WebStartDate <= CURDATE() 
		AND 
			WebEndDate > CURDATE() 
		
		#AND 
		#	p.USER_CustomerDesign = 0 
		#AND (
		#		(p.USER_PortfolioAktuell = -1) 
		#	OR 
		#		(i.Recom_Website = -1) 
		#	)
		

			GROUP BY 
				gr.Artikelgruppe 
			

		ORDER BY 
			p.pdf DESC 
 
		LIMIT 
		0, 20
</pre>