Unknown column 'libre' in 'order clause'
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 '%3423%' or l.localidad like '%3423%') group by i.PKimprenta order by libre limit 0,16