diff --git a/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite b/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite
index 2e464d768..76d31ba2d 100644
Binary files a/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite and b/Src/Asp.Net/SqliteTest/DataBase/SqlSugar4xTest.sqlite differ
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
index a55229561..b65d0b8d7 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs
@@ -484,8 +484,21 @@ namespace SqlSugar
                     }
                     result.Add(item);
                 }
+                return result;
             }
-            return result;
+            else {
+                DiffLogTableInfo diffTable = new DiffLogTableInfo();
+                diffTable.TableName = this.EntityInfo.DbTableName;
+                diffTable.TableDescription = this.EntityInfo.TableDescription;
+                diffTable.Columns = this.EntityInfo.Columns.Where(it => it.IsIgnore == false).Select(it => new DiffLogColumnInfo()
+                {
+                    ColumnDescription = it.ColumnDescription,
+                    ColumnName = it.DbColumnName,
+                    Value = it.PropertyInfo.GetValue(this.InsertObjs.Last(), null)
+                }).ToList();
+                return new List<DiffLogTableInfo>() { diffTable };
+            }
+           
         }
         #endregion
     }
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs
index 5f5fe3988..5b03fb18f 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/ExpressionsToSql/Subquery/Items/SubTop.cs
@@ -39,8 +39,7 @@ namespace SqlSugar
                 {
                     return 150;
                 }
-                else if (this.Context is OracleExpressionContext)
-                {
+                else if (this.Context is OracleExpressionContext) {
 
                     return 401;
                 }
@@ -60,11 +59,7 @@ namespace SqlSugar
             }
             else if (this.Context is OracleExpressionContext)
             {
-                return (HasWhere ? "AND" : "WHERE") + " ROWNUM=1";
-            }
-            else if (this.Context is PostgreSQLExpressionContext)
-            {
-                return "limit 1";
+                return (HasWhere?"AND":"WHERE")+ " ROWNUM=1";
             }
             else
             {
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
index f5ecde784..b5cf9bca4 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Realization/Oracle/DbMaintenance/OracleDbMaintenance.cs
@@ -257,19 +257,19 @@ namespace SqlSugar
             }
             return true;
         }
-        public override List<DbColumnInfo> GetColumnInfosByTableName(string tableName,bool isCache=true)
+        public override List<DbColumnInfo> GetColumnInfosByTableName(string tableName, bool isCache = true)
         {
             string cacheKey = "DbMaintenanceProvider.GetColumnInfosByTableName." + this.SqlBuilder.GetNoTranslationColumnName(tableName).ToLower();
             cacheKey = GetCacheKey(cacheKey);
             if (!isCache)
                 return GetColumnInfosByTableName(tableName);
             else
-            return this.Context.Utilities.GetReflectionInoCacheInstance().GetOrCreate(cacheKey,
-                    () =>
-                    {
-                        return GetColumnInfosByTableName(tableName);
+                return this.Context.Utilities.GetReflectionInoCacheInstance().GetOrCreate(cacheKey,
+                        () =>
+                        {
+                            return GetColumnInfosByTableName(tableName);
 
-                    });
+                        });
         }
 
         private List<DbColumnInfo> GetColumnInfosByTableName(string tableName)
@@ -330,7 +330,7 @@ namespace SqlSugar
                               string sql = "SELECT COMMENTS FROM USER_TAB_COMMENTS WHERE TABLE_NAME =@tableName ORDER BY TABLE_NAME";
                               var oldIsEnableLog = this.Context.Ado.IsEnableLogEvent;
                               this.Context.Ado.IsEnableLogEvent = false;
-                              var pks = this.Context.Ado.SqlQuery<string>(sql,new { tableName=tableName.ToUpper() });
+                              var pks = this.Context.Ado.SqlQuery<string>(sql, new { tableName = tableName.ToUpper() });
                               this.Context.Ado.IsEnableLogEvent = oldIsEnableLog;
                               return pks;
                           });
@@ -350,7 +350,7 @@ namespace SqlSugar
                                this.Context.Ado.IsEnableLogEvent = oldIsEnableLog;
                                return pks;
                            });
-            return comments.HasValue() ? comments.First(it=>it.DbColumnName.Equals(filedName,StringComparison.CurrentCultureIgnoreCase)).ColumnDescription : "";
+            return comments.HasValue() ? comments.First(it => it.DbColumnName.Equals(filedName, StringComparison.CurrentCultureIgnoreCase)).ColumnDescription : "";
 
         }
 
@@ -364,6 +364,10 @@ namespace SqlSugar
                     {
                         item.Length = 50;
                     }
+                    if (item.DataType == "varchar" && item.Length == 0)
+                    {
+                        item.Length = 50;
+                    }
                 }
             }
             string sql = GetCreateTableSql(tableName, columns);
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/SimpleClient.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/SimpleClient.cs
index 47e54f388..cafe82786 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/SimpleClient.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/SimpleClient.cs
@@ -80,7 +80,7 @@ namespace SqlSugar
         {
             return this.Context.Insertable(insertObjs).ExecuteCommand() > 0;
         }
-        public bool InsertRange<T>(List<T>[] insertObjs) where T : class, new()
+        public bool InsertRange<T>(List<T> insertObjs) where T : class, new()
         {
             return this.Context.Insertable(insertObjs).ExecuteCommand() > 0;
         }
@@ -92,6 +92,10 @@ namespace SqlSugar
         {
             return this.Context.Updateable(updateObjs).ExecuteCommand() > 0;
         }
+        public bool UpdateRange<T>(List<T> updateObjs) where T : class, new()
+        {
+            return this.Context.Updateable(updateObjs).ExecuteCommand() > 0;
+        }
         public bool Update<T>(Expression<Func<T, T>> columns, Expression<Func<T, bool>> whereExpression) where T : class, new()
         {
             return this.Context.Updateable<T>().UpdateColumns(columns).Where(whereExpression).ExecuteCommand() > 0;
@@ -193,7 +197,7 @@ namespace SqlSugar
         {
             return this.Context.Insertable(insertObjs).ExecuteCommand() > 0;
         }
-        public bool InsertRange(List<T>[] insertObjs)
+        public bool InsertRange(List<T> insertObjs)
         {
             return this.Context.Insertable(insertObjs).ExecuteCommand() > 0;
         }
@@ -205,6 +209,10 @@ namespace SqlSugar
         {
             return this.Context.Updateable(updateObjs).ExecuteCommand() > 0;
         }
+        public bool UpdateRange(List<T> updateObjs)
+        {
+            return this.Context.Updateable(updateObjs).ExecuteCommand() > 0;
+        }
         public bool Update(Expression<Func<T, T>> columns, Expression<Func<T, bool>> whereExpression)
         {
             return this.Context.Updateable<T>().UpdateColumns(columns).Where(whereExpression).ExecuteCommand() > 0;