diff --git a/Examples/base_entity/Program.cs b/Examples/base_entity/Program.cs
index 44fbb756..d3d36ca9 100644
--- a/Examples/base_entity/Program.cs
+++ b/Examples/base_entity/Program.cs
@@ -559,7 +559,7 @@ namespace base_entity
                 //.UseConnectionString(FreeSql.DataType.Firebird, @"database=localhost:D:\fbdata\EXAMPLES.fdb;user=sysdba;password=123456;max pool size=5")
                 //.UseQuoteSqlName(false)
 
-                //.UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;min pool size=1;Max pool size=3;AllowLoadLocalInfile=true")
+                .UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;min pool size=1;Max pool size=3;AllowLoadLocalInfile=true")
 
                 //.UseConnectionString(FreeSql.DataType.SqlServer, "Data Source=.;Integrated Security=True;Initial Catalog=freesqlTest;Pooling=true;Max Pool Size=3;TrustServerCertificate=true")
 
@@ -600,6 +600,11 @@ namespace base_entity
             BaseEntity.Initialization(fsql, () => _asyncUow.Value);
             #endregion
 
+            var updatejoin031sql = fsql.Update<User1>()
+                .Join<UserGroup>((a, b) => a.GroupId == b.Id)
+                .Set((a, b) => b.GroupName == a.Username + "b.groupname")
+                .ToSql();
+
             fsql.Delete<TypeHandler01>().Where("1=1").ExecuteAffrows();
             FreeSql.Internal.Utils.TypeHandlers.TryAdd(typeof(TestIdAndIdentity), new String_TestIdAndIdentity());
             fsql.Insert(new TypeHandler01 { id = Guid.NewGuid(), json = new TestIdAndIdentity { Id = 101, IdentityId = 10101 } }).ExecuteAffrows();
diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index 26522f10..537315e2 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -800,14 +800,5 @@
             <param name="that"></param>
             <returns></returns>
         </member>
-        <member name="M:Microsoft.Extensions.DependencyInjection.FreeSqlRepositoryDependencyInjection.AddFreeRepository(Microsoft.Extensions.DependencyInjection.IServiceCollection,System.Action{FreeSql.FluentDataFilter},System.Reflection.Assembly[])">
-            <summary>
-            批量注入 Repository，可以参考代码自行调整
-            </summary>
-            <param name="services"></param>
-            <param name="globalDataFilter"></param>
-            <param name="assemblies"></param>
-            <returns></returns>
-        </member>
     </members>
 </doc>
diff --git a/FreeSql/FreeSql.xml b/FreeSql/FreeSql.xml
index 368317df..9e33336b 100644
--- a/FreeSql/FreeSql.xml
+++ b/FreeSql/FreeSql.xml
@@ -1084,82 +1084,6 @@
             </summary>
             <returns></returns>
         </member>
-        <member name="T:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder">
-            <summary>
-            动态创建实体类型
-            </summary>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.#ctor(IFreeSql,System.String,System.Attribute[])">
-            <summary>
-            配置Class
-            </summary>
-            <param name="className">类名</param>
-            <param name="attributes">类标记的特性[Table(Name = "xxx")] [Index(xxxx)]</param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.Property(System.String,System.Type,System.Attribute[])">
-            <summary>
-            配置属性
-            </summary>
-            <param name="propertyName">属性名称</param>
-            <param name="propertyType">属性类型</param>
-            <param name="attributes">属性标记的特性-支持多个</param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.Property(System.String,System.Type,System.Boolean,System.Attribute[])">
-            <summary>
-            配置属性
-            </summary>
-            <param name="propertyName">属性名称</param>
-            <param name="propertyType">属性类型</param>
-            <param name="isOverride">该属性是否重写父类属性</param>
-            <param name="attributes">属性标记的特性-支持多个</param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.Property(System.String,System.Type,System.Boolean,System.Object,System.Attribute[])">
-            <summary>
-            配置属性
-            </summary>
-            <param name="propertyName">属性名称</param>
-            <param name="propertyType">属性类型</param>
-            <param name="isOverride">该属性是否重写父类属性</param>
-            <param name="defaultValue">属性默认值</param>
-            <param name="attributes">属性标记的特性-支持多个</param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.Extend(System.Type)">
-            <summary>
-            配置父类
-            </summary>
-            <param name="superClass">父类类型</param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.OverrideProperty(System.Reflection.Emit.TypeBuilder@,System.Reflection.Emit.MethodBuilder,FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.PropertyMethodEnum,System.String)">
-            <summary>
-            Override属性
-            </summary>
-            <param name="typeBuilder"></param>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.Build">
-            <summary>
-            Emit动态创建出Class - Type
-            </summary>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.FirstCharToLower(System.String)">
-            <summary>
-            首字母小写
-            </summary>
-            <param name="input"></param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSql.Extensions.DynamicEntity.DynamicCompileBuilder.FirstCharToUpper(System.String)">
-            <summary>
-            首字母大写
-            </summary>
-            <param name="input"></param>
-            <returns></returns>
-        </member>
         <member name="M:FreeSql.Extensions.EntityUtil.EntityUtilExtensions.GetEntityKeyString(IFreeSql,System.Type,System.Object,System.Boolean,System.String)">
             <summary>
             获取实体的主键值，以 "*|_,[,_|*" 分割，当任意一个主键属性无值时，返回 null
@@ -5824,28 +5748,6 @@
             请使用 fsql.InsertDict(dict) 方法插入字典数据
             </summary>
         </member>
-        <member name="M:FreeSqlGlobalDynamicEntityExtensions.DynamicEntity(FreeSql.ICodeFirst,System.String,System.Attribute[])">
-            <summary>
-            动态构建Class Type
-            </summary>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSqlGlobalDynamicEntityExtensions.CreateInstance(FreeSql.Internal.Model.TableInfo,System.Collections.Generic.Dictionary{System.String,System.Object})">
-            <summary>
-            根据字典，创建 table 对应的实体对象
-            </summary>
-            <param name="table"></param>
-            <param name="dict"></param>
-            <returns></returns>
-        </member>
-        <member name="M:FreeSqlGlobalDynamicEntityExtensions.CreateDictionary(FreeSql.Internal.Model.TableInfo,System.Object)">
-            <summary>
-            根据实体对象，创建 table 对应的字典
-            </summary>
-            <param name="table"></param>
-            <param name="instance"></param>
-            <returns></returns>
-        </member>
         <member name="M:FreeSqlGlobalExpressionCallExtensions.Between(System.DateTime,System.DateTime,System.DateTime)">
             <summary>
             C#： that >= between &amp;&amp; that &lt;= and<para></para>
diff --git a/FreeSql/Internal/CommonProvider/UpdateJoinProvider.cs b/FreeSql/Internal/CommonProvider/UpdateJoinProvider.cs
index 8242d20c..8bec0b70 100644
--- a/FreeSql/Internal/CommonProvider/UpdateJoinProvider.cs
+++ b/FreeSql/Internal/CommonProvider/UpdateJoinProvider.cs
@@ -198,7 +198,8 @@ namespace FreeSql.Internal.CommonProvider
                 case DataType.ShenTong:
                     break;
                 default:
-                    columnSql = $"{_query2Provider._tables[0].Alias}.{columnSql}";  //set a.name = b.name
+                    var tbalias = _query2Provider._tables.Where(tb => tb.Table == col.Table).FirstOrDefault()?.Alias ?? _query2Provider._tables[0].Alias;
+                    columnSql = $"{tbalias}.{columnSql}";  //set a.name = b.name
                     break;
             }