优化

src/cn/hmsoft/art/data/dao/std/StdMaterialDao.java

@@ -114,7 +114,7 @@ public class StdMaterialDao extends PlatformDaoSupport<StdMaterial> {
 	}
 
 	public Pager pageRandomStd(String material_type, String query, Integer start, Integer limit, QueryOrder order) {
-		String sql = " select distinct m.material_name,s.* from std_material s,std_enrol e,cf_enrol_material m,std_reg r"
+		String sql = " select distinct m.material_name,r.std_name,r.cert_id,s.* from std_material s,std_enrol e,cf_enrol_material m,std_reg r"
 				+ "  where s.material_type=? and s.material_type=m.material_type and s.std_id=e.std_id and e.pay_status='Active' and r.std_id=e.std_id ";
 		if(StringHelper.isEmpty(query)) {
 			return this.pageMapBySql(order, start, limit, sql, material_type);