Update diff log bug

Src/Asp.Net/SqlServerTest/Demo/DemoB_Aop.cs

@@ -59,6 +59,9 @@ namespace OrmTest
 
             db.Insertable(list.Take(5).ToList()).EnableDiffLogEvent().ExecuteCommand();
 
+            db.CodeFirst.InitTables<DiffLong>();
+            db.Insertable(new List<DiffLong>() { new DiffLong() { Id=SnowFlakeSingle.Instance.NextId(), Name="2" },new DiffLong() { Id = SnowFlakeSingle.Instance.NextId(), Name = "2" } }).EnableDiffLogEvent().ExecuteCommand();
+
             db.Insertable(new Order() { CreateTime=DateTime.Now, CustomId=1, Name="a" ,Price=1 }).EnableDiffLogEvent().ExecuteCommand();
 
             data.Name = "changeName";

Src/Asp.Net/SqlServerTest/Models/DiffLong.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    public class DiffLong
+    {
+        [SqlSugar.SugarColumn(IsPrimaryKey =true)]
+        public long Id { get; set; }
+        public string Name { get; set; }
+    }
+}

Src/Asp.Net/SqlServerTest/SqlServerTest.csproj

@@ -85,6 +85,7 @@
     <Compile Include="Demo\DemoN_SplitTable.cs" />
     <Compile Include="Models\DataDictionary.cs" />
     <Compile Include="Models\Custom.cs" />
+    <Compile Include="Models\DiffLong.cs" />
     <Compile Include="Models\EntityMapper.cs" />
     <Compile Include="Models\Mapper.cs" />
     <Compile Include="Models\SubInsertTest.cs" />

Src/Asp.Net/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs

@@ -861,6 +861,10 @@ namespace SqlSugar
             {
                 return GetDiffTableByEntity();
             }
+            else if (GetIdentityKeys().IsNullOrEmpty()) 
+            {
+                return GetDiffTableByEntity();
+            }
             else
             {
                 return GetDiffTableBySql(identity);