有些时候我们需要在程序中编写读取sql脚本文件并执行这些sql语句,但是我们在有些时候会遇到读出来的sql语句不能执行,其实不能执行并不是你的sql脚本文件有错误,而是去执行sql语句的时候,C#代码里面执行sql语句的代码对sql里面的一些标志字符不识别罢了,
不能有Go标识符,还有不能执行创建视图的语句,如果有上述语句C#代码执行sql语句的时候就会出错,只要过滤掉“GO“等标志字符。
// 读取文本文件public static ArrayList ReadSqlFile(string filePath){ArrayList alSql = new ArrayList();try{if (!File.Exists(filePath)){return null;}StreamReader sr = File.OpenText(filePath);string commandText = string.Empty;string varLine = string.Empty;while (sr.Peek() > -1){varLine = sr.ReadLine();if (varLine == string.Empty){continue;}if (varLine != "GO" || varLine != "go" || varLine.Substring(0, 2) != "--" || varLine.Substring(0, 2) != @"/*" || varLine.Substring(0, 2) != @"*/"){commandText += varLine;//commandText += "/r/n";}else{alSql.Add(commandText);commandText = string.Empty;}}alSql.Add(commandText);commandText = string.Empty;sr.Close();return alSql;}catch (Exception ex){Logger.Instance.DoSomesting = "【业务模块-文件读写】";Logger.Instance.Info($"读取文件(.sql)异常:{ex.Message}");return alSql;}}
调用执行(此处执行方法我用封装类方法,后面给一个直接执行方法参考)
ArrayList commandTextArrayList = null;string desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);// 获取桌面路径OpenFileDialog openFileDialog = new OpenFileDialog(); //以打开的方式openFileDialog.Multiselect = false; //该值确定是否可以选择多个文件openFileDialog.Title = "请选择文件"; //标题openFileDialog.InitialDirectory = desktopPath;//@"C:\"; //默认打开C:\路径(可更改)//限制只显示文件夹及后缀为sql的文件(可根据需求更改)openFileDialog.Filter = "SQL文件(*.sql)|*.sql";string sqlFileName = "";if (openFileDialog.ShowDialog() == DialogResult.OK){sqlFileName = openFileDialog.FileName;commandTextArrayList = FileRWUtil.ReadSqlFile(sqlFileName); //调用ExecuteSqlFile()方法,反回 ArrayList对象;isSucess = bllDatabase.ExecuteSQLFile(commandTextArrayList);}
private static void ExecuteCommand(ArrayList varSqlList){MyConnection.Open();SqlTransaction varTrans = MyConnection.BeginTransaction();SqlCommand command = new SqlCommand();command.Connection = MyConnection;command.Transaction = varTrans;try{ foreach(string varcommandText in varSqlList){command.CommandText = varcommandText;command.ExecuteNonQuery();}varTrans.Commit();}catch(Exception ex){varTrans.Rollback();throw ex;}finally{MyConnection.Close();}}