Unknown column 'studies' in 'order clause'<br>SELECT i.PKimprenta, i.imprenta, l.localidad  FROM imprentas i INNER JOIN localidades l ON i.FKlocalidad = l.PKlocalidad WHERE 1  and (i.imprenta like '%79%' or l.localidad like '%79%') 
		group by  i.PKimprenta
		order by  studies limit 0,16