Merge branch 'saas_zouxuan_07_11' of http://git.dayaedu.com/yonge/mec into master_saas

mec-biz/src/main/resources/config/mybatis/StudentMapper.xml

@@ -1453,7 +1453,7 @@
         LEFT JOIN subject sb ON sb.id_ = s.subject_id_list_
         <where>
             s.subject_id_list_ IS NOT NULL
-            <if test="organIds != nul and organIds != ''">
+            <if test="organIds != null and organIds != ''">
                 AND FIND_IN_SET(su.organ_id_,#{organIds})
             </if>
         </where>