diff --git a/初始化事件表.sql b/初始化事件表.sql
index fc19c14..047b39b 100644
--- a/初始化事件表.sql
+++ b/初始化事件表.sql
@@ -51,7 +51,7 @@ create table event
     proid            Nullable(String),
     step_id          Nullable(UInt16),
     step_group       Nullable(UInt16),
-    guide_start_time Nullable(DateTime('UTC')),
+    guide_start_time Nullable(UInt32),
     online_ts        Nullable(UInt16),
     `#time`          Nullable(DateTime('UTC'))
 )