mysql-Hibernate原生sql多表查询在Linux服务器上查询不到数据

String sql = "SELECT Area.* FROM area AS Area,district AS d WHERE Area.districtid=d.districtid AND Area.areaname= '"
+ areaname + "' AND d.districtname='" + cityname + "'";
@SuppressWarnings("unchecked")
List as = (List) getCurrentSession()
.createSQLQuery(sql).addEntity("Area",Area.class).list();