From 48ee7c963f29f5614a8f86c08608620cc6310793 Mon Sep 17 00:00:00 2001
From: gaoluyang <2820782392@qq.com>
Date: 星期一, 26 十月 2026 17:11:33 +0800
Subject: [PATCH] feat: 完善产品编码与技术文件管理

---
 yudao-module-mdm/src/main/java/cn/iocoder/yudao/module/mdm/dal/mysql/item/MdmItemMapper.java |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/yudao-module-mdm/src/main/java/cn/iocoder/yudao/module/mdm/dal/mysql/item/MdmItemMapper.java b/yudao-module-mdm/src/main/java/cn/iocoder/yudao/module/mdm/dal/mysql/item/MdmItemMapper.java
index eec20ce..c7c203a 100644
--- a/yudao-module-mdm/src/main/java/cn/iocoder/yudao/module/mdm/dal/mysql/item/MdmItemMapper.java
+++ b/yudao-module-mdm/src/main/java/cn/iocoder/yudao/module/mdm/dal/mysql/item/MdmItemMapper.java
@@ -20,6 +20,9 @@
 @Mapper
 public interface MdmItemMapper extends BaseMapperX<MdmItemDO> {
 
+    @org.apache.ibatis.annotations.Select("SELECT COALESCE(MAX(CAST(SUBSTRING(code, 5) AS UNSIGNED)), 0) FROM mdm_item WHERE deleted = 0 AND code LIKE CONCAT(#{prefix}, '%')")
+    Integer selectMaxSequenceByPrefix(@Param("prefix") String prefix);
+
     default PageResult<MdmItemDO> selectPage(MdmItemPageReqVO reqVO, Collection<Long> categoryIds) {
         return selectPage(reqVO, new LambdaQueryWrapperX<MdmItemDO>()
                 .likeIfPresent(MdmItemDO::getCode, reqVO.getCode())
@@ -92,4 +95,4 @@
      */
     List<Map<String, Object>> selectItemReferenceCount(@Param("itemId") Long itemId);
 
-}
\ No newline at end of file
+}

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