diff --git a/v2/sketch.py b/v2/sketch.py
index 090a23f..e0f40ab 100644
--- a/v2/sketch.py
+++ b/v2/sketch.py
@@ -1,5 +1,6 @@
 import copy
-
+import pandas as pd
+from settings import settings
 from .valid_data import *
 
 
@@ -9,6 +10,7 @@ class Sketch:
         self.struct_cache = struct_cache
         self.__type_dict = dict()
         self.__struct_dict = dict()
+        self.init_tb_struct()
 
     @property
     def type_dict(self):
@@ -30,20 +32,30 @@ class Sketch:
         if self.struct_cache:
             self.struct_cache.update(db, tb, data)
 
+    def init_tb_struct_cache(self, db, tb):
+        sql = f"select name,type from system.columns where database='{db}' and table='{tb}'"
+
+        data, columns = self.db_client.execute(sql, with_column_types=True, columnar=True)
+        res = {k: v for k, v in zip(data[0], data[1])}
+        self.__struct_dict[f'{db}_{tb}'] = res
+        self.up_tb_struct(db, tb, res)
+        return res
+
+    def init_tb_struct(self):
+        self.init_tb_struct_cache(settings.GAME, 'event')
+        self.init_tb_struct_cache(settings.GAME, 'user')
+
     def get_tb_struct_cache(self, db, tb):
         """
-        查一条记录 取字段 和类型
+        取字段 和类型
         :param db:
         :param tb:
         :return:
         """
         if self.__struct_dict.get(f'{db}_{tb}'):
             return self.__struct_dict.get(f'{db}_{tb}')
-        sql = f'select * from {db}.{tb} limit 1'
-        _, columns = self.db_client.execute(sql, with_column_types=True)
-        res = {item[0]: item[1] for item in columns}
-        self.__struct_dict[f'{db}_{tb}'] = res
-        self.up_tb_struct(db, tb, res)
+
+        res = self.init_tb_struct_cache(db, tb)
         return res
 
     def update_user_view(self, db, tb):