select * from A_tem  except select * from A

                    string connString = ConfigurationManager.ConnectionStrings["connString"].ToString();SqlConnection conn = new SqlConnection(connString);conn.Open();Logger.LogMessage(string.Format("Createing Temporary table CsvFileVCQData_Tem......"));//Creater Temporary Tablestring sql = "CREATE TABLE CsvFileVCQData_Tem( [StringFormatted] [nvarchar](max) NULL, [ProjectName] [nvarchar](256) NULL, [ResID_MD4Hash] [nvarchar](max) NULL, [Wordcount] [numeric](18, 0) NULL, [CharacterCount] [numeric](18, 0) NULL, [SentanceCount] [numeric](18, 0) NULL, [SingleWord] [bit] NULL, [TwoWordsOnly] [bit] NULL, [HasPunctuation] [bit] NULL,[ContainsProductName] [bit]NULL, [HasPlaceholder] [bit] NULL, [EndsInColon] [bit]  NULL, [HasVCQ] [bit] NULL,[HasDevComment] [bit] NULL, [HasLocComment] [bit] NULL,[HasScreenshot] [bit] NULL,[IsMobile] [bit] NULL,[IsDesktop] [bit] NULL,[IsWeb] [bit] NULL,[IsConsumer] [bit] NULL,[IsBusiness] [bit] NULL,[TotalSteelheadResults] [nvarchar](256) NULL,[SteelheadPasses] [numeric](18, 0) NULL,[SteelheadFailures] [numeric](18, 0) NULL, [S_Pass_Over_Total] [nvarchar](256) NULL, [S_Failed_Over_Total] [nvarchar](256) NULL,[ScoredLabels] [bit] NULL,[ScoredProbabilities] [nvarchar](256) NULL) ON[PRIMARY] TEXTIMAGE_ON[PRIMARY]";Execute_Sql(sql);SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(conn);sqlbulkcopy.DestinationTableName = "CsvFileVCQData_Tem";//sqlbulkcopy.DestinationTableName = itemTable.TableName;//数据库中的表名sqlbulkcopy.BulkCopyTimeout = 300;Logger.LogMessage(string.Format("Finding " + itemTable.Rows.Count + " pieces of data"));Logger.LogMessage(string.Format("Importing into the temporary table......"));DataTable datNew = itemTable.DefaultView.ToTable(false, new string[] {"StringFormatted","ProjectName","ResID_MD4Hash","Wordcount","CharacterCount","SentanceCount","SingleWord","TwoWordsOnly","HasPunctuation","ContainsProductName","HasPlaceholder","EndsInColon","HasVCQ","HasDevComment","HasLocComment","HasScreenshot","IsMobile","IsDesktop","IsWeb","IsConsumer","IsBusiness","Total Steelhead Results","SteelheadPasses","SteelheadFailures","S_Pass_Over_Total","S_Failed_Over_Total","Scored Labels","Scored Probabilities"});sqlbulkcopy.WriteToServer(datNew);DbHelper DBH = new DbHelper();DataTable result = DBH.ExecuteDataTable("get_NewData");//调用存储过程Logger.LogMessage(string.Format("Finding "+result.Rows.Count+" pieces of new data......"));sqlbulkcopy.DestinationTableName = "CsvFileVCQData";sqlbulkcopy.WriteToServer(result);Logger.LogMessage(string.Format("Droping temporary table CsvFileVCQData_Tem......"));string sql_ = "drop table CsvFileVCQData_Tem";Execute_Sql(sql_);conn.Close();Logger.LogMessage(string.Format("Operation Done!"));