diff --git a/src/ShardingCore.MySql/DIExtension.cs b/src/ShardingCore.MySql/DIExtension.cs
index 3af20be4..3d3f433d 100644
--- a/src/ShardingCore.MySql/DIExtension.cs
+++ b/src/ShardingCore.MySql/DIExtension.cs
@@ -28,7 +28,7 @@ namespace ShardingCore.MySql
     */
     public static class DIExtension
     {
-        public static IServiceCollection AddShardingSqlServer(this IServiceCollection services, Action<MySqlOptions> configure)
+        public static IServiceCollection AddShardingMySql(this IServiceCollection services, Action<MySqlOptions> configure)
         {
             if (configure == null)
                 throw new ArgumentNullException($"AddScfSqlServerProvider :{nameof(configure)}");
diff --git a/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByDayVirtualRoute.cs b/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByDayVirtualRoute.cs
index 5430efda..7fe238ed 100644
--- a/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByDayVirtualRoute.cs
+++ b/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByDayVirtualRoute.cs
@@ -38,27 +38,22 @@ namespace ShardingCore.Core.VirtualRoutes.Abstractions
                     _logger.LogWarning($"没有找到对应的匹配需要进行多表扫描:ShardingOperator:[{shardingOperator}]");
                     return tail => true;
                     //throw new NotSupportedException(xxxx);
-                    break;
                 case ShardingOperatorEnum.GreaterThan:
                     return tail =>int.Parse(tail) > int.Parse(shardingKey.ConvertLongToTime().ToString("yyyyMMdd"));
                 case ShardingOperatorEnum.GreaterThanOrEqual:
                     //yyyyMMdd
                     return tail =>int.Parse(tail) >= int.Parse(shardingKey.ConvertLongToTime().ToString("yyyyMMdd"));
-                    break;
                 case ShardingOperatorEnum.LessThan:
                     return tail =>int.Parse(tail) < int.Parse(shardingKey.ConvertLongToTime().ToString("yyyyMMdd"));
                 case ShardingOperatorEnum.LessThanOrEqual:
                     //yyyyMMdd
                     return tail =>int.Parse(tail) <= int.Parse(shardingKey.ConvertLongToTime().ToString("yyyyMMdd"));
-                    break;
                 case ShardingOperatorEnum.Equal:
                     //yyyyMMdd
                     return tail =>int.Parse(tail) == int.Parse(shardingKey.ConvertLongToTime().ToString("yyyyMMdd"));
-                    break;
                 case ShardingOperatorEnum.NotEqual:
                     //yyyyMMdd
                     return tail =>int.Parse(tail) != int.Parse(shardingKey.ConvertLongToTime().ToString("yyyyMMdd"));
-                    break;
                 default:
                     throw new ArgumentOutOfRangeException(nameof(shardingOperator), shardingOperator, null);
             }
diff --git a/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByWeekVirtualRoute.cs b/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByWeekVirtualRoute.cs
index b1d69d3f..c7f7155b 100644
--- a/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByWeekVirtualRoute.cs
+++ b/src/ShardingCore/Core/VirtualRoutes/Abstractions/SimpleShardingDateByWeekVirtualRoute.cs
@@ -44,25 +44,20 @@ namespace ShardingCore.Core.VirtualRoutes.Abstractions
                     _logger.LogWarning($"没有找到对应的匹配需要进行多表扫描:ShardingOperator:[{shardingOperator}]");
                     return tail => true;
                     //throw new NotSupportedException(xxxx);
-                    break;
                 case ShardingOperatorEnum.GreaterThan:
                 case ShardingOperatorEnum.GreaterThanOrEqual:
                     //yyyyMMdd
                     return tail =>String.Compare(tail, GetWeekTableTail(shardingKey), StringComparison.Ordinal) >= 0;
-                    break;
                 case ShardingOperatorEnum.LessThan:
                 case ShardingOperatorEnum.LessThanOrEqual:
                     //yyyyMMdd
                     return tail =>String.Compare(tail, GetWeekTableTail(shardingKey), StringComparison.Ordinal) <= 0;
-                    break;
                 case ShardingOperatorEnum.Equal:
                     //yyyyMMdd
                     return tail =>tail == GetWeekTableTail(shardingKey);
-                    break;
                 case ShardingOperatorEnum.NotEqual:
                     //yyyyMMdd
                     return tail =>tail != GetWeekTableTail(shardingKey);
-                    break;
                 default:
                     throw new ArgumentOutOfRangeException(nameof(shardingOperator), shardingOperator, null);
             }
diff --git a/src/ShardingCore/Exceptions/CreateSqlVirtualTableNotFoundException.cs b/src/ShardingCore/Exceptions/CreateSqlVirtualTableNotFoundException.cs
index bfb65e19..fef84b08 100644
--- a/src/ShardingCore/Exceptions/CreateSqlVirtualTableNotFoundException.cs
+++ b/src/ShardingCore/Exceptions/CreateSqlVirtualTableNotFoundException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public CreateSqlVirtualTableNotFoundException(string? message) : base(message)
+        public CreateSqlVirtualTableNotFoundException(string message) : base(message)
         {
         }
 
-        public CreateSqlVirtualTableNotFoundException(string? message, Exception? innerException) : base(message, innerException)
+        public CreateSqlVirtualTableNotFoundException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/QueryableRouteNotMatchException.cs b/src/ShardingCore/Exceptions/QueryableRouteNotMatchException.cs
index 77ba7248..18bbdbe1 100644
--- a/src/ShardingCore/Exceptions/QueryableRouteNotMatchException.cs
+++ b/src/ShardingCore/Exceptions/QueryableRouteNotMatchException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public QueryableRouteNotMatchException(string? message) : base(message)
+        public QueryableRouteNotMatchException(string message) : base(message)
         {
         }
 
-        public QueryableRouteNotMatchException(string? message, Exception? innerException) : base(message, innerException)
+        public QueryableRouteNotMatchException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/ShardingEntityTypeConfiguration404Exception.cs b/src/ShardingCore/Exceptions/ShardingEntityTypeConfiguration404Exception.cs
index 8d88dc5d..38c40828 100644
--- a/src/ShardingCore/Exceptions/ShardingEntityTypeConfiguration404Exception.cs
+++ b/src/ShardingCore/Exceptions/ShardingEntityTypeConfiguration404Exception.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public ShardingEntityTypeConfiguration404Exception(string? message) : base(message)
+        public ShardingEntityTypeConfiguration404Exception(string message) : base(message)
         {
         }
 
-        public ShardingEntityTypeConfiguration404Exception(string? message, Exception? innerException) : base(message, innerException)
+        public ShardingEntityTypeConfiguration404Exception(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/ShardingKeyRouteMoreException.cs b/src/ShardingCore/Exceptions/ShardingKeyRouteMoreException.cs
index d4b4964c..6cb4b9c1 100644
--- a/src/ShardingCore/Exceptions/ShardingKeyRouteMoreException.cs
+++ b/src/ShardingCore/Exceptions/ShardingKeyRouteMoreException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public ShardingKeyRouteMoreException(string? message) : base(message)
+        public ShardingKeyRouteMoreException(string message) : base(message)
         {
         }
 
-        public ShardingKeyRouteMoreException(string? message, Exception? innerException) : base(message, innerException)
+        public ShardingKeyRouteMoreException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/ShardingKeyRouteNotMatchException.cs b/src/ShardingCore/Exceptions/ShardingKeyRouteNotMatchException.cs
index 668aa4fa..6eae6e3e 100644
--- a/src/ShardingCore/Exceptions/ShardingKeyRouteNotMatchException.cs
+++ b/src/ShardingCore/Exceptions/ShardingKeyRouteNotMatchException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public ShardingKeyRouteNotMatchException(string? message) : base(message)
+        public ShardingKeyRouteNotMatchException(string message) : base(message)
         {
         }
 
-        public ShardingKeyRouteNotMatchException(string? message, Exception? innerException) : base(message, innerException)
+        public ShardingKeyRouteNotMatchException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/ShardingOwnerNotFoundException.cs b/src/ShardingCore/Exceptions/ShardingOwnerNotFoundException.cs
index fee31ca3..85e87874 100644
--- a/src/ShardingCore/Exceptions/ShardingOwnerNotFoundException.cs
+++ b/src/ShardingCore/Exceptions/ShardingOwnerNotFoundException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public ShardingOwnerNotFoundException(string? message) : base(message)
+        public ShardingOwnerNotFoundException(string message) : base(message)
         {
         }
 
-        public ShardingOwnerNotFoundException(string? message, Exception? innerException) : base(message, innerException)
+        public ShardingOwnerNotFoundException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/ShardingTransactionException.cs b/src/ShardingCore/Exceptions/ShardingTransactionException.cs
index c080e4ae..c4612bae 100644
--- a/src/ShardingCore/Exceptions/ShardingTransactionException.cs
+++ b/src/ShardingCore/Exceptions/ShardingTransactionException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public ShardingTransactionException(string? message) : base(message)
+        public ShardingTransactionException(string message) : base(message)
         {
         }
 
-        public ShardingTransactionException(string? message, Exception? innerException) : base(message, innerException)
+        public ShardingTransactionException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/VirtualRouteNotFoundException.cs b/src/ShardingCore/Exceptions/VirtualRouteNotFoundException.cs
index 1e3a3387..74e81f4b 100644
--- a/src/ShardingCore/Exceptions/VirtualRouteNotFoundException.cs
+++ b/src/ShardingCore/Exceptions/VirtualRouteNotFoundException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public VirtualRouteNotFoundException(string? message) : base(message)
+        public VirtualRouteNotFoundException(string message) : base(message)
         {
         }
 
-        public VirtualRouteNotFoundException(string? message, Exception? innerException) : base(message, innerException)
+        public VirtualRouteNotFoundException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/VirtualRouteNotMatchException.cs b/src/ShardingCore/Exceptions/VirtualRouteNotMatchException.cs
index 36389d9f..0267e1d5 100644
--- a/src/ShardingCore/Exceptions/VirtualRouteNotMatchException.cs
+++ b/src/ShardingCore/Exceptions/VirtualRouteNotMatchException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public VirtualRouteNotMatchException(string? message) : base(message)
+        public VirtualRouteNotMatchException(string message) : base(message)
         {
         }
 
-        public VirtualRouteNotMatchException(string? message, Exception? innerException) : base(message, innerException)
+        public VirtualRouteNotMatchException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/Exceptions/VirtualTableNotFoundException.cs b/src/ShardingCore/Exceptions/VirtualTableNotFoundException.cs
index 7f2c97d5..e8939525 100644
--- a/src/ShardingCore/Exceptions/VirtualTableNotFoundException.cs
+++ b/src/ShardingCore/Exceptions/VirtualTableNotFoundException.cs
@@ -19,11 +19,11 @@ namespace ShardingCore.Exceptions
         {
         }
 
-        public VirtualTableNotFoundException(string? message) : base(message)
+        public VirtualTableNotFoundException(string message) : base(message)
         {
         }
 
-        public VirtualTableNotFoundException(string? message, Exception? innerException) : base(message, innerException)
+        public VirtualTableNotFoundException(string message, Exception innerException) : base(message, innerException)
         {
         }
     }
diff --git a/src/ShardingCore/ShardingBootstrapper.cs b/src/ShardingCore/ShardingBootstrapper.cs
index c100e8ba..667f1e1d 100644
--- a/src/ShardingCore/ShardingBootstrapper.cs
+++ b/src/ShardingCore/ShardingBootstrapper.cs
@@ -85,7 +85,7 @@ namespace ShardingCore
                     {
                         _tableCreator.CreateTable(virtualTable.EntityType, tail);
                     }
-                    catch (Exception e)
+                    catch (Exception)
                     {
                         _logger.LogWarning($"table :{virtualTable.GetOriginalTableName()}{shardingConfig.TailPrefix}{tail} will created");
                     }
diff --git a/test/ShardingCore.Test50/ShardingTest.cs b/test/ShardingCore.Test50/ShardingTest.cs
index 6d8edabd..60b531ae 100644
--- a/test/ShardingCore.Test50/ShardingTest.cs
+++ b/test/ShardingCore.Test50/ShardingTest.cs
@@ -23,7 +23,7 @@ namespace ShardingCore.Test50
         }
 
         [Fact]
-        public async Task ToList1()
+        public async Task ToList_All_Test()
         {
             var mods=await _virtualDbContext.Set<SysUserMod>().ToShardingListAsync();
             Assert.Equal(100,mods.Count);
@@ -31,7 +31,7 @@ namespace ShardingCore.Test50
             Assert.Equal(1000,ranges.Count);
         }
         [Fact]
-        public async Task ToList1_OrderBy()
+        public async Task ToList1_OrderBy_Test()
         {
             var modascs=await _virtualDbContext.Set<SysUserMod>().OrderBy(o=>o.Age).ToShardingListAsync();
             Assert.Equal(100,modascs.Count);
@@ -41,7 +41,7 @@ namespace ShardingCore.Test50
             Assert.Equal(1,moddescs.Last().Age);
         }
         [Fact]
-        public async Task ToList2()
+        public async Task ToList_Id_In_Test()
         {
             var ids = new[] {"1", "2", "3", "4"};
             var sysUserMods=await _virtualDbContext.Set<SysUserMod>().Where(o=>ids.Contains(o.Id)).ToShardingListAsync();
@@ -53,7 +53,7 @@ namespace ShardingCore.Test50
             }
         }
         [Fact]
-        public async Task ToList3()
+        public async Task ToList_Id_Eq_Test()
         {
             var mods=await _virtualDbContext.Set<SysUserMod>().Where(o=>o.Id=="3").ToShardingListAsync();
             Assert.Single(mods);
@@ -63,7 +63,7 @@ namespace ShardingCore.Test50
             Assert.Equal("3",ranges[0].Id);
         }
         [Fact]
-        public async Task ToList4()
+        public async Task ToList_Id_Not_Eq_Test()
         {
             var mods=await _virtualDbContext.Set<SysUserMod>().Where(o=>o.Id!="3").ToShardingListAsync();
             Assert.Equal(99,mods.Count);
@@ -73,7 +73,7 @@ namespace ShardingCore.Test50
             Assert.DoesNotContain(ranges,o=>o.Id=="3");
         }
         [Fact]
-        public async Task ToList5()
+        public async Task ToList_Name_Eq_Test()
         {
             var mods=await _virtualDbContext.Set<SysUserMod>().Where(o=>o.Name=="name_3").ToShardingListAsync();
             Assert.Single(mods);
@@ -83,7 +83,7 @@ namespace ShardingCore.Test50
             Assert.Equal("3",ranges[0].Id);
         }
         [Fact]
-        public async Task ToList6()
+        public async Task ToList_Id_Eq_Not_In_Db_Test()
         {
             var mods=await _virtualDbContext.Set<SysUserMod>().Where(o=>o.Id=="1001").ToShardingListAsync();
             Assert.Empty(mods);
@@ -91,7 +91,7 @@ namespace ShardingCore.Test50
             Assert.Empty(ranges);
         }
         [Fact]
-        public async Task ToList7()
+        public async Task ToList_Name_Eq_Not_In_Db_Test()
         {
             var mods=await _virtualDbContext.Set<SysUserMod>().Where(o=>o.Name=="name_1001").ToShardingListAsync();
             Assert.Empty(mods);
@@ -99,7 +99,7 @@ namespace ShardingCore.Test50
             Assert.Empty(ranges);
         }
         [Fact]
-        public async Task FirstOrDefault1()
+        public async Task FirstOrDefault_Order_By_Id_Test()
         {
             var sysUserMod=await _virtualDbContext.Set<SysUserMod>().OrderBy(o=>o.Id).ShardingFirstOrDefaultAsync();
             Assert.True(sysUserMod!=null&&sysUserMod.Id=="1");