diff --git a/src/main/java/com/yunhai/userbase/repository/SysUserGroupRelRepository.java b/src/main/java/com/yunhai/userbase/repository/SysUserGroupRelRepository.java
index 0a53aff..ceff7c7 100644
--- a/src/main/java/com/yunhai/userbase/repository/SysUserGroupRelRepository.java
+++ b/src/main/java/com/yunhai/userbase/repository/SysUserGroupRelRepository.java
@@ -3,6 +3,8 @@ package com.yunhai.userbase.repository;
 import com.yunhai.userbase.entity.SysUserGroupRel;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import java.util.List;
 import java.util.Optional;
@@ -24,6 +26,15 @@ public interface SysUserGroupRelRepository extends JpaRepository<SysUserGroupRel
 
     List<SysUserGroupRel> findByUserIdInAndGroupId(List<Integer> userIds, Integer groupId);
 
+    /**
+     * 取「用户在指定组范围内」的最小 sort_no（按 userId 聚合），用于列表 Vo 携带排序号。<br>
+     * 与列表排序（组内最小 sort_no）保持一致；组范围内无记录则返回空。
+     */
+    @Query("SELECT r.userId, MIN(r.sortNo) FROM SysUserGroupRel r " +
+            "WHERE r.userId IN :userIds AND r.groupId IN :groupIds GROUP BY r.userId")
+    List<Object[]> findMinSortNoByUserIdInAndGroupIdIn(@Param("userIds") List<Integer> userIds,
+                                                        @Param("groupIds") List<Integer> groupIds);
+
     Optional<SysUserGroupRel> findByUserIdAndGroupId(Integer userId, Integer groupId);
 
     List<SysUserGroupRel> findByGroupId(Integer groupId);