diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/ParameterInsertable.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/ParameterInsertable.cs
index 6a1e8cef2..6027c8ffd 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/ParameterInsertable.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/InsertableProvider/ParameterInsertable.cs
@@ -57,7 +57,7 @@ namespace SqlSugar
                 result +=this.Context.SaveQueues(false);
             });
             if (this.Context.CurrentConnectionConfig.DbType == DbType.Oracle)
-                return objects.Length;
+                result=objects.Length;
             return result;
         }
         public async Task<int> DefaultExecuteCommandAsync()
@@ -84,7 +84,7 @@ namespace SqlSugar
                     this.Context.AddQueue("end");
                 result += await this.Context.SaveQueuesAsync(false);
                 if (this.Context.CurrentConnectionConfig.DbType == DbType.Oracle)
-                    return objects.Length;
+                    result= objects.Length;
                 return result;
             });
             return result;
diff --git a/Src/Asp.NetCore2/SqlSugar/Entities/DbColumnInfo.cs b/Src/Asp.NetCore2/SqlSugar/Entities/DbColumnInfo.cs
index d516bc66a..3bfff1ac9 100644
--- a/Src/Asp.NetCore2/SqlSugar/Entities/DbColumnInfo.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Entities/DbColumnInfo.cs
@@ -23,5 +23,6 @@ namespace SqlSugar
         public int Scale { get; set; }
         public bool IsArray { get;  set; }
         internal bool IsJson { get;  set; }
+        public bool? IsUnsigned { get; set; }
     }
 }
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/DbMaintenance/MySqlDbMaintenance.cs b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/DbMaintenance/MySqlDbMaintenance.cs
index c6150749c..261d1c85d 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/DbMaintenance/MySqlDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/DbMaintenance/MySqlDbMaintenance.cs
@@ -34,7 +34,8 @@ namespace SqlSugar
                                     CASE WHEN is_nullable = 'YES'
                                     THEN true ELSE false END AS `IsNullable`,
                                     numeric_scale as Scale,
-                                    numeric_scale as DecimalDigits
+                                    numeric_scale as DecimalDigits,
+                                    LOCATE(  'unsigned',COLUMN_type   ) >0  as IsUnsigned
                                     FROM
                                     Information_schema.columns where TABLE_NAME='{0}' and  TABLE_SCHEMA=(select database()) ORDER BY ordinal_position";
                 return sql;