更新术语概念查询接口，更新SQL语句，能够返回所有术语

knowledgeman-service/src/main/resources/mapper/LibraryInfoMapper.xml

@@ -37,7 +37,7 @@
         a.is_concept
         FROM library_info a,
         (SELECT concept_id, GROUP_CONCAT(name separator ', ') as synonymous FROM library_info
-        WHERE is_concept is NULL AND concept_id IS NOT NULL AND is_deleted = "N"
+        WHERE concept_id IS NOT NULL AND is_deleted = "N"
         GROUP BY concept_id ORDER BY concept_id) b
         WHERE a.concept_id = b.concept_id AND a.is_deleted = "N" AND a.is_concept = 1
         <if test = "term != ''">