error en query: SELECT 
				s.idSector,
				s.Nombre,
				sp.IdPeriodo,
				sp.Activo
			 FROM 
				bef_Sector AS s
				Inner Join bef_SectorPeriodo AS sp ON s.idSector = sp.IdSector
			 WHERE 
				sp.Activo = 1 and s.idSector = 68?id_periodo=20
			 ORDER BY 
				sp.IdPeriodo desc 
			 LIMIT 1 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?id_periodo=20
			 ORDER BY 
				sp.IdPeriodo desc 
			 LIMIT 1' at line 10