diff --git a/.env.example b/.env.example
index ce0aab0..16f4678 100644
--- a/.env.example
+++ b/.env.example
@@ -37,5 +37,6 @@ JWT_REFRESH_TOKEN_EXPIRE_SECONDS = 604800               # JWT刷新令牌默认
 JWT_GLOBAL_ENABLE = false                               # 是否开启全局JWT认证
 JWT_WHITE_LIST = ["/token", "/login", "/refresh", "/registry", "/verify", "/async_delay", "/", "/redoc", "/docs", "/static/swagger-ui.min.css", "/static/swagger-ui-bundle.min.js", "/openapi.json", "/static/redoc.standalone.js"] # JWT认证白名单接口，不需要认证的接口
 
-FILE_SAVE_PATH=/www/wwwroot/web/web/upload_file/
-FILE_PUBLIC_PATH=/web/upload_file/
+FILE_SAVE_PATH=/www/wwwroot/web/web/upload_file/        # 文件保存在服务器上的路径
+FILE_PUBLIC_PATH=/web/upload_file/                      # 文件在浏览器上的访问路径
+DEFAULT_UPDATE_BY_FIELDS=true                           # 更新接口是否默认按字段更新（按需更新字段值）
diff --git a/app/config/env.py b/app/config/env.py
index fda8272..6ff6368 100644
--- a/app/config/env.py
+++ b/app/config/env.py
@@ -47,6 +47,7 @@ class Settings(BaseSettings):
 
   file_save_path: str = Field(..., env='FILE_SAVE_PATH')
   file_public_path: str = Field(..., env='FILE_PUBLIC_PATH')
+  default_update_by_fields: bool = Field(..., env='DEFAULT_UPDATE_BY_FIELDS')
 
   class Config:
     env_file = ".env"
diff --git a/app/general/general_utils/sql_service.py b/app/general/general_utils/sql_service.py
index 1d3bc58..5c3aec6 100644
--- a/app/general/general_utils/sql_service.py
+++ b/app/general/general_utils/sql_service.py
@@ -1,5 +1,6 @@
 import traceback
 
+from app.config.env import env
 from app.general.general_utils.build_delete_sql import build_delete_sql
 from app.general.general_utils.build_insert_sql import build_insert_sql
 from app.general.general_utils.build_query_sql import build_query_sql
@@ -201,6 +202,7 @@ async def update(session: AsyncSessionDep, query_config, module_config, debug_da
   conn = await session.connection()
 
   row = get_value(query_config, 'row', None)
+  update_by_fields = get_value(query_config, 'updateByFields', env.default_update_by_fields)
   update_fields = get_value(query_config, 'updateFields', None)
 
   if row is None:
@@ -208,6 +210,9 @@ async def update(session: AsyncSessionDep, query_config, module_config, debug_da
       "error": "row parameter is missing",
     }
 
+  if update_by_fields:
+    update_fields = row.keys()
+
   row_id = get_value(row, 'id', None)
 
   if row_id is None: