bugfix

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

@@ -550,7 +550,7 @@
                 </foreach>
             </if>
             <if test="currentGrade != null">
-                AND sr.current_grade_ LIKE CONCAT('%',#{currentGrade},'%')
+                AND stu.current_grade_ = #{#{currentGrade}}
             </if>
             <if test="createYear != null">
                 AND DATE_FORMAT(sr.create_time_,'%Y') =  #{createYear}