教育类型参数业务

zhongzheng-system/src/main/resources/mapper/modules/exam/ExamKnowledgeMapper.xml

@@ -93,7 +93,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             )
         </if>
 
-        <if test="knowledgeName != null and knowledgeName !=0 ">
+        <if test="knowledgeName != null ">
             AND k.knowledge_name like concat('%', #{knowledgeName}, '%')
         </if>
     </select>