From ebdc70481905eec9511f6f9f4bb3f104afa91082 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=99=BE=E7=90=83?= <xiqiu@example.com>
Date: Fri, 6 Mar 2026 09:23:42 +0000
Subject: [PATCH] =?UTF-8?q?fix:=20TiingoTicker=20CreatedAt/UpdatedAt=20?=
 =?UTF-8?q?=E6=94=B9=E4=B8=BA=E5=8F=AF=E7=A9=BA?=
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---
 AssetManager.Data/TiingoTicker.cs | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/AssetManager.Data/TiingoTicker.cs b/AssetManager.Data/TiingoTicker.cs
index 255c349..29e5278 100644
--- a/AssetManager.Data/TiingoTicker.cs
+++ b/AssetManager.Data/TiingoTicker.cs
@@ -9,7 +9,7 @@ namespace AssetManager.Data;
 public class TiingoTicker
 {
     /// <summary>
-    /// 主键 ID
+    /// 主键 ID（自增，导入时忽略此字段）
     /// </summary>
     [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
     public int Id { get; set; }
@@ -51,12 +51,14 @@ public class TiingoTicker
     public DateTime? EndDate { get; set; }
 
     /// <summary>
-    /// 创建时间
+    /// 创建时间（导入时可空，数据库会自动设置）
     /// </summary>
-    public DateTime CreatedAt { get; set; } = DateTime.Now;
+    [SugarColumn(IsNullable = true)]
+    public DateTime? CreatedAt { get; set; }
 
     /// <summary>
-    /// 更新时间
+    /// 更新时间（导入时可空，数据库会自动设置）
     /// </summary>
-    public DateTime UpdatedAt { get; set; } = DateTime.Now;
+    [SugarColumn(IsNullable = true)]
+    public DateTime? UpdatedAt { get; set; }
 }