src/main/resources/mapper/NavigationClassificationColumnMapper.xml

@@ -4,7 +4,7 @@

    <!-- 获取最大排序号 -->
    <select id="selectMaxSortNum" parameterType="Long" resultType="int">
        select ifnull(max(sort_num), 0) sortNum
        select NVL(max(sort_num), 0) sortNum
        FROM cnf_nav_classify_column
        where classification_id = #{classificationId}
    </select>