1、oracle NVL 修改为适配 PG 的 coalesce

zjugis-workflow/src/main/resources/mapper/postgresql/CodeTemplateMapper.xml

@@ -5,13 +5,13 @@
 
     <!--查询最大排序号-->
     <select id="getMaxSortNum" resultType="Integer">
-        SELECT NVL(MAX(C.INDEX_CODE), 0)
+        SELECT coalesce(MAX(C.INDEX_CODE), 0)
         FROM CODE_TEMPLATE C
     </select>
 
     <!--根据所属系统获取最大排序号-->
     <select id="getMaxSortNumBySystemId" resultType="Integer">
-        SELECT NVL(MAX(C.INDEX_CODE), 0)
+        SELECT coalesce(MAX(C.INDEX_CODE), 0)
         FROM CODE_TEMPLATE C
         WHERE C.TO_SYSTEM_ID = #{systemId}
     </select>