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; }
@@ -38,5 +38,15 @@ public class TiingoTicker
     [SugarColumn(ColumnDataType = "varchar(10)")]
     public string? PriceCurrency { get; set; }
 
-   
+    /// <summary>
+    /// 创建时间（导入时可空，数据库会自动设置）
+    /// </summary>
+    [SugarColumn(IsNullable = true)]
+    public DateTime? CreatedAt { get; set; }
+
+    /// <summary>
+    /// 更新时间（导入时可空，数据库会自动设置）
+    /// </summary>
+    [SugarColumn(IsNullable = true)]
+    public DateTime? UpdatedAt { get; set; }
 }

AssetManager.Infrastructure/Services/MarketDataService.cs

@@ -1,4 +1,3 @@
-using System.Net.Http.Json;
 using System.Text.Json;
 using AssetManager.Models.DTOs;
 using Microsoft.Extensions.Logging;