diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs
index 71a3f8d61..f7ce73c16 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/CodeFirstProvider/CodeFirstProvider.cs
@@ -85,6 +85,10 @@ namespace SqlSugar
         {
             InitTables(typeof(T), typeof(T2), typeof(T3), typeof(T4));
         }
+        public void InitTables<T, T2, T3, T4,T5>()
+        {
+            InitTables(typeof(T), typeof(T2), typeof(T3), typeof(T4),typeof(T5));
+        }
         public virtual void InitTables(params Type[] entityTypes)
         {
             if (entityTypes.HasValue())
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
index c45834d77..3d63ec00c 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
@@ -263,6 +263,15 @@ namespace SqlSugar
             TruncateTable<T4>();
             return true;
         }
+        public virtual bool TruncateTable<T, T2, T3, T4,T5>()
+        {
+            TruncateTable<T>();
+            TruncateTable<T2>();
+            TruncateTable<T3>();
+            TruncateTable<T4>();
+            TruncateTable<T5>();
+            return true;
+        }
         public virtual bool DropColumn(string tableName, string columnName)
         {
             columnName = this.SqlBuilder.GetTranslationColumnName(columnName);
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
index 03430b01d..98671784a 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/DeleteNavProvider.cs
@@ -15,12 +15,27 @@ namespace SqlSugar
 
         public DeleteNavProvider<Root,TChild> ThenInclude<TChild>(Expression<Func<T,TChild>> expression)
         {
-            return null;
+            throw new Exception("开发中7月15号之前上线");
         }
-
-        public DeleteNavProvider<Root,Root> AsNav()
+        public DeleteNavProvider<Root, TChild>  Include<TChild>(Expression<Func<T, TChild>> expression)
         {
-            return null;
+            throw new Exception("开发中7月15号之前上线");
+        }
+        public DeleteNavProvider<Root, TChild> ThenInclude<TChild>(Expression<Func<T, List<TChild>>> expression)
+        {
+            throw new Exception("开发中7月15号之前上线");
+        }
+        public DeleteNavProvider<Root, TChild> Include<TChild>(Expression<Func<T, List<TChild>>> expression)
+        {
+            throw new Exception("开发中7月15号之前上线");
+        }
+        private DeleteNavProvider<Root,Root> AsNav()
+        {
+            throw new Exception("开发中7月15号之前上线");
+        }
+        public bool ExecuteCommand() 
+        {
+            return true;
         }
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderHelper.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderHelper.cs
index 878c7fdf1..531b71f64 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderHelper.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderHelper.cs
@@ -67,7 +67,7 @@ namespace SqlSugar
             var pkColumn = entity.Columns.FirstOrDefault(it => it.IsPrimarykey == true);
             if (nav.Navigat.Name2.HasValue())
             {
-                pkColumn = _ParentEntity.Columns.FirstOrDefault(it => it.PropertyName == nav.Navigat.Name2);
+                pkColumn = entity.Columns.FirstOrDefault(it => it.PropertyName == nav.Navigat.Name2);
             }
             return pkColumn;
         }
@@ -76,42 +76,66 @@ namespace SqlSugar
             var fkColumn = entity.Columns.FirstOrDefault(it => it.PropertyName == nav.Navigat.Name);
             return fkColumn;
         }
-        private void InsertDatas<TChild>(List<TChild> children, EntityColumnInfo pkColumn) where TChild : class, new()
+        private void InsertDatas<TChild>(List<TChild> children, EntityColumnInfo pkColumn, EntityColumnInfo NavColumn=null) where TChild : class, new()
         {
             children = children.Distinct().ToList();
             var x = this._Context.Storageable(children).WhereColumns(new string[] { pkColumn.PropertyName }).ToStorage();
             var insertData = children = x.InsertList.Select(it => it.Item).ToList();
-            if (pkColumn.IsIdentity||pkColumn.OracleSequenceName.HasValue())
+            Check.ExceptionEasy(pkColumn==null&&NavColumn==null,$"The entity is invalid",$"实体错误无法使用导航");
+            InitData(pkColumn, insertData);
+            this._ParentList = children.Cast<object>().ToList();
+        }
+
+        private void InitData<TChild>(EntityColumnInfo pkColumn, List<TChild> insertData) where TChild : class, new()
+        {
+            if (pkColumn.IsIdentity || pkColumn.OracleSequenceName.HasValue())
             {
                 InsertIdentity(insertData);
             }
-            else if (pkColumn.UnderType==UtilConstants.LongType&&pkColumn.IsIdentity==false)
+            else if (pkColumn.UnderType == UtilConstants.LongType)
             {
-                foreach (var child in insertData) 
-                {
-                    if (IsDefaultValue(pkColumn.PropertyInfo.GetValue(child)))
-                    {
-                        pkColumn.PropertyInfo.SetValue(child, SnowFlakeSingle.Instance.NextId());
-                    }
-                }
-                this._Context.Insertable(insertData).ExecuteCommand();
+                SetValue(pkColumn, insertData, ()=>SnowFlakeSingle.Instance.NextId());
             }
-            else if (pkColumn.UnderType == UtilConstants.GuidType && pkColumn.IsIdentity == false)
+            else if (pkColumn.UnderType == UtilConstants.GuidType)
             {
-                foreach (var child in insertData)
-                {
-                    if (IsDefaultValue(pkColumn.PropertyInfo.GetValue(child)))
-                    {
-                        pkColumn.PropertyInfo.SetValue(child, Guid.NewGuid());
-                    }
-                }
-                this._Context.Insertable(insertData).ExecuteCommand();
+                SetValue(pkColumn, insertData, () => Guid.NewGuid());
+            }
+            else if (pkColumn.UnderType == UtilConstants.StringType)
+            {
+                SetValue(pkColumn, insertData, () => Guid.NewGuid().ToString());
+            }
+            else if (pkColumn.UnderType == UtilConstants.IntType)
+            {
+                SetError(pkColumn, insertData);
             }
             else
             {
-                this._Context.Insertable(insertData).ExecuteCommand();
+
             }
-            this._ParentList = children.Cast<object>().ToList();
+        }
+
+        private void SetValue<TChild>(EntityColumnInfo pkColumn, List<TChild> insertData,Func<object> value) where TChild : class, new()
+        {
+            foreach (var child in insertData)
+            {
+                if (IsDefaultValue(pkColumn.PropertyInfo.GetValue(child)))
+                {
+                    pkColumn.PropertyInfo.SetValue(child, value());
+                }
+            }
+            this._Context.Insertable(insertData).ExecuteCommand();
+        }
+        private void SetError<TChild>(EntityColumnInfo pkColumn, List<TChild> insertData) where TChild : class, new()
+        {
+            foreach (var child in insertData)
+            {
+                if (IsDefaultValue(pkColumn.PropertyInfo.GetValue(child)))
+                {
+                    var name = pkColumn.EntityName + " " + pkColumn.DbColumnName;
+                    Check.ExceptionEasy($"The field {name} is not an autoassignment type and requires an assignment", $"字段{name}不是可自动赋值类型，需要赋值");
+                }
+            }
+            this._Context.Insertable(insertData).ExecuteCommand();
         }
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToMany.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToMany.cs
index 1ba69062d..c11a670d7 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToMany.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToMany.cs
@@ -19,6 +19,11 @@ namespace SqlSugar
             var thisPkColumn = GetPkColumnByNav(thisEntity, nav);
             var thisFkColumn= GetFKColumnByNav(thisEntity, nav);
             EntityColumnInfo parentPkColumn = GetParentPkColumn();
+            EntityColumnInfo parentNavColumn = GetParentPkNavColumn(nav);
+            if (parentNavColumn != null) 
+            {
+                parentPkColumn = parentNavColumn;
+            }
             foreach (var item in parentList)
             {
                 var parentValue = parentPkColumn.PropertyInfo.GetValue(item);
@@ -45,6 +50,15 @@ namespace SqlSugar
             }
             return parentPkColumn;
         }
+        private EntityColumnInfo GetParentPkNavColumn(EntityColumnInfo nav)
+        {
+            EntityColumnInfo result = null;
+            if (nav.Navigat.Name2.HasValue())
+            {
+                result = _ParentPkColumn = this._ParentEntity.Columns.FirstOrDefault(it => it.PropertyName== nav.Navigat.Name2);
+            }
+            return result;
+        }
 
         private void SetNewParent<TChild>(EntityInfo entityInfo,EntityColumnInfo entityColumnInfo) where TChild : class, new()
         {
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToOne.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToOne.cs
index 5f410bf3b..0d696f128 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToOne.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavProviderOneToOne.cs
@@ -31,6 +31,14 @@ namespace SqlSugar
                         {
                             navPropertyValue = pkValue;
                         }
+
+                    }
+                    if (!IsDefaultValue(navPropertyValue)) 
+                    {
+                        this._Context.Updateable<DbTableInfo>
+                           ().AS(parentEntity.DbTableName)
+                           .SetColumns(parentColumn.DbColumnName, navPropertyValue)
+                           .Where(parentPkColumn.DbColumnName, "=", parentPkColumn.PropertyInfo.GetValue(parent)).ExecuteCommand();
                     }
                     if (IsDefaultValue(navPropertyValue)) 
                     {
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavTask.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavTask.cs
index bf4ca0f23..95b6f2701 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavTask.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/InsertNavTask.cs
@@ -13,7 +13,7 @@ namespace SqlSugar
         public SqlSugarProvider Context { get; set; }
         public InsertNavProvider<Root, Root> insertNavProvider { get; set; }
 
-        public InsertNavTask<Root, TChild> ThenInclude<TChild>(Expression<Func<Root, TChild>> expression) where TChild : class, new()
+        public InsertNavTask<Root, TChild>  Include<TChild>(Expression<Func<Root, TChild>> expression) where TChild : class, new()
         {
             this.Context = insertNavProvider._Context;
             InsertNavTask<Root, TChild> result = new InsertNavTask<Root, TChild>();
@@ -22,7 +22,7 @@ namespace SqlSugar
             result.Context = this.Context;
             return result;
         }
-        public InsertNavTask<Root, TChild> ThenInclude<TChild>(Expression<Func<Root, List<TChild>>> expression) where TChild : class, new()
+        public InsertNavTask<Root, TChild>  Include<TChild>(Expression<Func<Root, List<TChild>>> expression) where TChild : class, new()
         {
             this.Context = insertNavProvider._Context;
             InsertNavTask<Root, TChild> result = new InsertNavTask<Root, TChild>();
@@ -52,7 +52,15 @@ namespace SqlSugar
             result.Context = this.Context;
             return result;
         }
-        public void ExecuteCommand()
+        public InsertNavTask<Root, TChild> Include<TChild>(Expression<Func<Root, TChild>> expression) where TChild : class, new()
+        {
+            return AsNav().ThenInclude(expression);
+        }
+        public InsertNavTask<Root, TChild> Include<TChild>(Expression<Func<Root, List<TChild>>> expression) where TChild : class, new()
+        {
+            return AsNav().ThenInclude(expression);
+        }
+        public bool ExecuteCommand()
         {
             var hasTran = this.Context.Ado.Transaction != null;
             if (hasTran)
@@ -66,17 +74,19 @@ namespace SqlSugar
                     PreFunc();
                 }, ex => throw ex);
             }
+            return true;
         }
-        public async Task ExecuteCommandAsync()
+        public async Task<bool> ExecuteCommandAsync()
         {
             await Task.Run(async () => 
             {
                 ExecuteCommand();
                 await Task.Delay(0);
-            }); 
+            });
+            return true;
         }
 
-        public InsertNavTask<Root, Root> AsNav()
+        private InsertNavTask<Root, Root> AsNav()
         {
             InsertNavTask<Root, Root> result = new InsertNavTask<Root, Root>();
             Func<InsertNavProvider<Root, Root>> func = () => PreFunc().AsNav();
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateInsert.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateInsert.cs
index 3f7b1ac33..f1904cbac 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateInsert.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/ExecuteNavProvider/UpdateInsert.cs
@@ -15,10 +15,25 @@ namespace SqlSugar
 
         public UpdateNavProvider<Root,TChild> ThenInclude<TChild>(Expression<Func<T,TChild>> expression)
         {
-            return null;
+            throw new Exception("开发中7月15号之前上线");
         }
-
-        public UpdateNavProvider<Root,Root> AsNav()
+        public UpdateNavProvider<Root, TChild>  Include<TChild>(Expression<Func<T, TChild>> expression)
+        {
+            throw new Exception("开发中7月15号之前上线");
+        }
+        public UpdateNavProvider<Root, TChild> ThenInclude<TChild>(Expression<Func<T, List<TChild>>> expression)
+        {
+            throw new Exception("开发中7月15号之前上线");
+        }
+        public UpdateNavProvider<Root, TChild> Include<TChild>(Expression<Func<T, List<TChild>>> expression)
+        {
+            throw new Exception("开发中7月15号之前上线");
+        }
+        public bool ExecuteCommand()
+        {
+            return true;
+        }
+        private UpdateNavProvider<Root,Root> AsNav()
         {
             return null;
         }
diff --git a/Src/Asp.NetCore2/SqlSugar/Interface/ICodeFirst.cs b/Src/Asp.NetCore2/SqlSugar/Interface/ICodeFirst.cs
index 9483e7b36..20cacc311 100644
--- a/Src/Asp.NetCore2/SqlSugar/Interface/ICodeFirst.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Interface/ICodeFirst.cs
@@ -17,6 +17,7 @@ namespace SqlSugar
         void InitTables<T, T2>();
         void InitTables<T, T2, T3>();
         void InitTables<T, T2, T3, T4>();
+        void InitTables<T, T2, T3, T4,T5>();
         SplitCodeFirstProvider SplitTables();
         TableDifferenceProvider GetDifferenceTables<T>();
         TableDifferenceProvider GetDifferenceTables(params Type[] types);
diff --git a/Src/Asp.NetCore2/SqlSugar/Interface/IDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Interface/IDbMaintenance.cs
index 324c0f8fb..24ebdadb0 100644
--- a/Src/Asp.NetCore2/SqlSugar/Interface/IDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Interface/IDbMaintenance.cs
@@ -36,6 +36,7 @@ namespace SqlSugar
         bool TruncateTable<T,T2>();
         bool TruncateTable<T, T2, T3>();
         bool TruncateTable<T, T2, T3,T4>();
+        bool TruncateTable<T, T2, T3, T4,T5>();
         bool CreateTable(string tableName, List<DbColumnInfo> columns,bool isCreatePrimaryKey=true);
         bool AddColumn(string tableName, DbColumnInfo column);
         bool UpdateColumn(string tableName, DbColumnInfo column);