diff --git a/FreeSql/Interface/Curd/IInsertOrUpdate.cs b/FreeSql/Interface/Curd/IInsertOrUpdate.cs
index e1ca5eff..1e019c50 100644
--- a/FreeSql/Interface/Curd/IInsertOrUpdate.cs
+++ b/FreeSql/Interface/Curd/IInsertOrUpdate.cs
@@ -36,6 +36,16 @@ namespace FreeSql
         /// <returns></returns>
         IInsertOrUpdate<T1> SetSource(T1 source);
         /// <summary>
+        /// 添加或更新，设置实体
+        /// </summary>
+        /// <param name="source">实体</param>
+        /// <param name="tempPrimarys">
+        /// 根据临时主键插入或更新，a => a.Name | a => new{a.Name,a.Time} | a => new[]{"name","time"}<para></para>
+        /// 注意：不处理自增，因某些数据库依赖主键或唯一键，所以指定临时主键仅对 SqlServer/PostgreSQL/Firebird/达梦/南大通用/金仓/神通 有效
+        /// </param>
+        /// <returns></returns>
+        IInsertOrUpdate<T1> SetSource(T1 source, Expression<Func<T1, object>> tempPrimarys);
+        /// <summary>
         /// 添加或更新，设置实体集合
         /// </summary>
         /// <param name="source">实体集合</param>
diff --git a/FreeSql/Internal/CommonProvider/InsertOrUpdateProvider.cs b/FreeSql/Internal/CommonProvider/InsertOrUpdateProvider.cs
index 557fcdf2..ed8dd94d 100644
--- a/FreeSql/Internal/CommonProvider/InsertOrUpdateProvider.cs
+++ b/FreeSql/Internal/CommonProvider/InsertOrUpdateProvider.cs
@@ -118,6 +118,7 @@ namespace FreeSql.Internal.CommonProvider
         }
 
         public IInsertOrUpdate<T1> SetSource(T1 source) => this.SetSource(new[] { source });
+        public IInsertOrUpdate<T1> SetSource(T1 source, Expression<Func<T1, object>> tempPrimarys) => this.SetSource(new[] { source }, tempPrimarys);
         public IInsertOrUpdate<T1> SetSource(IEnumerable<T1> source, Expression<Func<T1, object>> tempPrimarys = null)
         {
             if (source == null || source.Any() == false) return this;