diff --git a/help/修改自增id.sql b/help/修改自增id.sql
index 1890b7c0..76150767 100644
--- a/help/修改自增id.sql
+++ b/help/修改自增id.sql
@@ -1 +1,26 @@
-select setval('base_sys_user_id_seq', 10000000, false);
\ No newline at end of file
+select setval('base_sys_user_id_seq', 10000000, false);
+
+
+-- 1. 恢复原自增，解除依赖
+ALTER TABLE base_sys_user
+ALTER COLUMN id SET DEFAULT nextval('base_sys_user_id_seq');
+
+-- 2. 清理旧函数
+DROP FUNCTION IF EXISTS next_8digit_rand_id() CASCADE;
+
+-- 3. 【终极版】不重复 + 乱序 + 固定8位
+CREATE OR REPLACE FUNCTION next_8digit_rand_id()
+RETURNS bigint
+LANGUAGE plpgsql VOLATILE
+AS $$
+DECLARE
+  seq_val bigint;
+BEGIN
+  seq_val := nextval('base_sys_user_id_seq');
+  RETURN 10000000 + ((seq_val * 1103515245 + 12345) # 58329) % 90000000;
+END;
+$$;
+
+-- 4. 启用
+ALTER TABLE base_sys_user
+ALTER COLUMN id SET DEFAULT next_8digit_rand_id();