diff --git a/update.sql b/update.sql
index 178f4f2..5dca35e 100644
--- a/update.sql
+++ b/update.sql
@@ -10,9 +10,8 @@ CREATE TABLE IF NOT EXISTS assets_category (
     created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
     updater VARCHAR(64) NOT NULL,
     updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    deleter VARCHAR(64) NOT NULL,
-    deleted_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    is_deleted BOOLEAN NOT NULL DEFAULT FALSE,
+    deleter VARCHAR(64),
+    deleted_at timestamp(6),
 
     -- 分类核心字段
     bid VARCHAR(64) NOT NULL,
@@ -44,7 +43,6 @@ COMMENT ON COLUMN assets_category.updater IS '更新人';
 COMMENT ON COLUMN assets_category.updated_at IS '更新时间';
 COMMENT ON COLUMN assets_category.deleter IS '删除人（软删）';
 COMMENT ON COLUMN assets_category.deleted_at IS '删除时间（软删）';
-COMMENT ON COLUMN assets_category.is_deleted IS '是否删除（软删）';
 COMMENT ON COLUMN assets_category.bid IS '业务ID';
 COMMENT ON COLUMN assets_category.name IS '分类名称';
 COMMENT ON COLUMN assets_category.parent_id IS '父分类ID，为空表示根分类';
@@ -68,9 +66,8 @@ CREATE TABLE IF NOT EXISTS assets_asset (
     created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
     updater VARCHAR(64) NOT NULL,
     updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    deleter VARCHAR(64) NOT NULL,
-    deleted_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    is_deleted BOOLEAN NOT NULL DEFAULT FALSE,
+    deleter VARCHAR(64),
+    deleted_at timestamp(6),
 
     -- 基础信息字段
     bid VARCHAR(64) NOT NULL,
@@ -117,9 +114,8 @@ COMMENT ON COLUMN assets_asset.creator IS '创建人';
 COMMENT ON COLUMN assets_asset.created_at IS '创建时间';
 COMMENT ON COLUMN assets_asset.updater IS '更新人';
 COMMENT ON COLUMN assets_asset.updated_at IS '更新时间';
-COMMENT ON COLUMN assets_category.deleter IS '删除人（软删）';
-COMMENT ON COLUMN assets_category.deleted_at IS '删除时间（软删）';
-COMMENT ON COLUMN assets_asset.is_deleted IS '是否删除（软删）';
+COMMENT ON COLUMN assets_asset.deleter IS '删除人（软删）';
+COMMENT ON COLUMN assets_asset.deleted_at IS '删除时间（软删）';
 COMMENT ON COLUMN assets_asset.bid IS '业务ID';
 COMMENT ON COLUMN assets_asset.name IS '资产名称';
 COMMENT ON COLUMN assets_asset.description IS '资产描述';