update

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

@@ -1076,7 +1076,7 @@
           #{classGroupId}
       </foreach>
       <if test="lockFlag != null">
-          lock_flag_ = #{lockFlag}
+          AND lock_flag_ = #{lockFlag}
       </if>
     </select>