diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/CodeFirst/MySqlCodeFirst.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/CodeFirst/MySqlCodeFirst.cs
index b49ef3d0f..bd45e64f9 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/CodeFirst/MySqlCodeFirst.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/CodeFirst/MySqlCodeFirst.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlCodeFirst : CodeFirstProvider
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbBind/MySqlDbBind.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbBind/MySqlDbBind.cs
index 9f78febc5..eceb352a4 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbBind/MySqlDbBind.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbBind/MySqlDbBind.cs
@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlDbBind : DbBindProvider
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbFirst/MySqlDbFirst.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbFirst/MySqlDbFirst.cs
index 0faf83d6a..c3d893206 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbFirst/MySqlDbFirst.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbFirst/MySqlDbFirst.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlDbFirst : DbFirstProvider
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbMaintenance/MySqlDbMaintenance.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbMaintenance/MySqlDbMaintenance.cs
index af7411b64..c2bee9899 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbMaintenance/MySqlDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/DbMaintenance/MySqlDbMaintenance.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlDbMaintenance : DbMaintenanceProvider
     {
@@ -341,6 +341,10 @@ namespace SqlSugar.MySqlConnector
             {
                 if (item.ColumnDescription != null)
                 {
+                    if (item.UnderType == UtilConstants.GuidType && item.Length == 0)
+                    {
+                        item.Length = 36;
+                    }
                     var mySqlCodeFirst = this.Context.CodeFirst as MySqlCodeFirst;
                     string sql = GetUpdateColumnSql(entity.DbTableName, mySqlCodeFirst.GetEntityColumnToDbColumn(entity, entity.DbTableName, item))+" "+(item.IsIdentity? "AUTO_INCREMENT" : "")+" " + " COMMENT '" + item.ColumnDescription + "'";
                     db.Ado.ExecuteCommand(sql);
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/MySqlProvider.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/MySqlProvider.cs
index 2f00429ea..00cbe1fb5 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/MySqlProvider.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/MySqlProvider.cs
@@ -6,7 +6,7 @@ using System.Data.Common;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlProvider : AdoProvider
     {
@@ -54,7 +54,7 @@ namespace SqlSugar.MySqlConnector
         }
         public override IDataAdapter GetAdapter()
         {
-            return new MySqlConnectorDataAdapter();
+            return new MySqlDataAdapter();
         }
         public override DbCommand GetCommand(string sql, SugarParameter[] parameters)
         {
@@ -75,7 +75,7 @@ namespace SqlSugar.MySqlConnector
         }
         public override void SetCommandToAdapter(IDataAdapter dataAdapter, DbCommand command)
         {
-            ((MySqlConnectorDataAdapter)dataAdapter).SelectCommand = (MySqlCommand)command;
+            ((MySqlDataAdapter)dataAdapter).SelectCommand = (MySqlCommand)command;
         }
         /// <summary>
         /// if mysql return MySqlParameter[] pars
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/Queryable/MySqlQueryable.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/Queryable/MySqlQueryable.cs
index f14f2fefa..97779c89a 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/Queryable/MySqlQueryable.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/Queryable/MySqlQueryable.cs
@@ -1,4 +1,4 @@
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlQueryable<T> : QueryableProvider<T>
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs
index a1db12910..f7a4219bf 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBlukCopy.cs
@@ -7,7 +7,7 @@ using System.Linq;
 using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlBlukCopy<T> 
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBuilder.cs
index b384c29af..a1fb2134a 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlBuilder.cs
@@ -2,7 +2,7 @@
 using System.Linq;
 using System.Text.RegularExpressions;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlBuilder : SqlBuilderProvider
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlDeleteBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlDeleteBuilder.cs
index 62f992b82..c82daf4d8 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlDeleteBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlDeleteBuilder.cs
@@ -1,4 +1,4 @@
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlDeleteBuilder : DeleteBuilder
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlExpressionContext.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlExpressionContext.cs
index 08e793460..0ade08f20 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlExpressionContext.cs
@@ -1,6 +1,6 @@
 using System;
 using System.Linq;
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlExpressionContext : ExpressionContext, ILambdaExpressions
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlFastBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlFastBuilder.cs
index a7e5eaece..44e52e316 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlFastBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlFastBuilder.cs
@@ -8,7 +8,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace SqlSugar.MySqlConnector  
+namespace SqlSugar.MySqlConnector 
 {
    
     public class MySqlFastBuilder:FastBuilder,IFastBuilder
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs
index e15aac1d5..482a21885 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlInsertBuilder.cs
@@ -2,7 +2,7 @@
 using System.Linq;
 using System.Text;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlInsertBuilder : InsertBuilder
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs
index c8e52ec32..c8da0bb56 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlQueryBuilder.cs
@@ -2,7 +2,7 @@
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public partial class MySqlQueryBuilder : QueryBuilder
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs
index aed847a1f..4c3054872 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/MySql/SqlBuilder/MySqlUpdateBuilder.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     public class MySqlUpdateBuilder : UpdateBuilder
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ErrorMessage.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ErrorMessage.cs
index d6766e339..fad294a3f 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ErrorMessage.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ErrorMessage.cs
@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     internal static partial class ErrorMessage
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/FileHelper.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/FileHelper.cs
index 548d701f0..40aa0a74a 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/FileHelper.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/FileHelper.cs
@@ -4,7 +4,7 @@ using System.IO;
 using System.Linq;
 using System.Text;
 
-namespace SqlSugar.MySqlConnector 
+namespace SqlSugar.MySqlConnector
 {
     internal class FileHelper
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilConstants.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilConstants.cs
index c27bad43e..f24373722 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilConstants.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilConstants.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Dynamic;
 using System.Linq;
 using System.Text;
-namespace SqlSugar.MySqlConnector  
+namespace SqlSugar.MySqlConnector 
 {
     internal static class UtilConstants
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilExtensions.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilExtensions.cs
index e05ac8468..645eccc9c 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilExtensions.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilExtensions.cs
@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-namespace SqlSugar.MySqlConnector  
+namespace SqlSugar.MySqlConnector 
 {
     /// <summary>
     ///Common Extensions for external users
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilMethods.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilMethods.cs
index 0dbafb1be..1ed5547d9 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilMethods.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/UtilMethods.cs
@@ -12,7 +12,7 @@ using System.Security.Cryptography;
 using System.Text;
 using System.Text.RegularExpressions;
 
-namespace SqlSugar.MySqlConnector  
+namespace SqlSugar.MySqlConnector 
 {
     public class UtilMethods
     {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ValidateExtensions.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ValidateExtensions.cs
index 0859c77c3..77bf8c0ca 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ValidateExtensions.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar.MySqlConnectorCore/Tools/ValidateExtensions.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Text.RegularExpressions;
-namespace SqlSugar.MySqlConnector  
+namespace SqlSugar.MySqlConnector 
 {
     internal static class ValidateExtensions
     {