diff --git a/ccic-exam/src/main/resources/mappers/ExamScheduleMapper.xml b/ccic-exam/src/main/resources/mappers/ExamScheduleMapper.xml
index af9c94d..20152c8 100644
--- a/ccic-exam/src/main/resources/mappers/ExamScheduleMapper.xml
+++ b/ccic-exam/src/main/resources/mappers/ExamScheduleMapper.xml
@@ -27,10 +27,10 @@
         info.is_deleted = 0
           and paper.is_deleted = 0
         <if test="examName != null and examName != ''">
-            AND info.exam_name LIKE '%' + #{examName} + '%'
+            AND info.exam_name LIKE '%' || #{examName} || '%'
         </if>
         <if test="paperName != null and paperName != ''">
-            AND paper.paper_name LIKE '%' + #{paperName} + '%'
+            AND paper.paper_name LIKE '%' || #{paperName} || '%'
         </if>
         <if test="regulatedIndustry != null and regulatedIndustry != ''">
             AND ind.industry_id = #{regulatedIndustry}