添加项目文件。

Atomx.Common/Entities/PriceTrend.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Atomx.Common.Entities
+{
+    /// <summary>
+    /// 价格走势
+    /// </summary>
+    [Table("PriceTrends")]
+    public class PriceTrend
+    {
+        /// <summary>
+        /// 数据ID
+        /// </summary>
+        [DatabaseGenerated(DatabaseGeneratedOption.None)]
+        [Key]
+        public long Id { get; set; }
+
+        /// <summary>
+        /// 日期
+        /// </summary>
+        public int Date { get; set; }
+
+        /// <summary>
+        /// 类型
+        /// </summary>
+        public int Type { get; set; }
+
+        /// <summary>
+        /// 当前价格
+        /// </summary>
+        public decimal Price { get; set; }
+
+        /// <summary>
+        /// 最低价格
+        /// </summary>
+        public decimal LowestPrice { get; set; }
+
+        /// <summary>
+        /// 最高价格
+        /// </summary>
+        public decimal HighestPrice { get; set; }
+
+        /// <summary>
+        /// 当前零售价格
+        /// </summary>
+        public decimal RetailPrice { get; set; }
+
+        /// <summary>
+        /// 最低零售价格
+        /// </summary>
+        public decimal LowestRetailPrice { get; set; }
+
+        /// <summary>
+        /// 最高零售价格
+        /// </summary>
+        public decimal HighestRetailPrice { get; set; }
+
+        /// <summary>
+        /// 创建时间
+        /// </summary>
+        [Column(TypeName = "timestamptz")]
+        public DateTime CreateTime { get; set; }
+
+        /// <summary>
+        /// 更新时间
+        /// </summary>
+        [Column(TypeName = "timestamptz")]
+        public DateTime? UpdateTime { get; set; }
+
+    }
+}