odbc

问题 Here is my code: OdbcConnection conn = new OdbcConnection("Driver={Microsoft Text Driver (*.txt; *.csv)};DSN=scrapped.csv"); conn.Open(); OdbcCommand foo = new OdbcCommand(@"SELECT * FROM [scrapped.csv] WHERE KWOTA < 100.00", conn); IDataReader dr = foo.ExecuteReader(); StreamWriter asd = new StreamWriter("outfile.txt"); while (dr.Read()) { int cols = dr.GetSchemaTable().Rows.Count; for (int i = 0; i < cols; i++) { asd.Write(string.Format("{0};",dr[i].ToString())); } asd.WriteLine(); } asd

问题 Here is my code: OdbcConnection conn = new OdbcConnection("Driver={Microsoft Text Driver (*.txt; *.csv)};DSN=scrapped.csv"); conn.Open(); OdbcCommand foo = new OdbcCommand(@"SELECT * FROM [scrapped.csv] WHERE KWOTA < 100.00", conn); IDataReader dr = foo.ExecuteReader(); StreamWriter asd = new StreamWriter("outfile.txt"); while (dr.Read()) { int cols = dr.GetSchemaTable().Rows.Count; for (int i = 0; i < cols; i++) { asd.Write(string.Format("{0};",dr[i].ToString())); } asd.WriteLine(); } asd

问题 A month ago, I was showing a buddy how use .NET to query MySQL. It worked just fine, but he didn't understand why we needed a "driver" for MySQL in conjunction with ODBC. He though ODBC would be enough. When he asked me why, I did my best, but my answer came up short. What is the correct explanation for this question? 回答1: The reason you need a driver is that ODBC is not in itself a driver for talking to databases: it's an abstraction and an API. Essentially it is an adaptor layer designed to

问题 I trid the following code, import pyodbc try: pyodbc.connect('DRIVER={%s};SERVER=%s;DATABASE=%s;UID=%s;PWD=%s' % (driver, server, database, uid, password)) except pyodbc.Error, err: logging.warn(err) The error message format i get is ('HY000', "[HY000] [MySQL][ODBC 5.1 Driver]Access denied for user 'root'@'192.168.2.27' (using password: YES) (1045) (SQLDriverConnect)") I want to receive just the message part of the error i.e. Access denied for user 'root'@'192.168.2.27'(using password: YES) I

问题 I'm running the following query in a PHP ODBC connection to a MSSQL sever: DECLARE @weekStart SMALLDATETIME; SET @weekStart = DATEADD(d,0, DATEDIFF(d,0,GETDATE())); -- weekStart = TODAY @ 00:00:00 -- per http://weblogs.sqlteam.com/jeffs/archive/2007/01/02/56079.aspx SET @weekStart = DATEADD(d, 1-DATEPART(dw, GETDATE()), @weekStart); -- subtract to last SUN @ 00:00:00 SELECT DATEDIFF(week, Run_Date, @weekStart) AS weeksAgo ,MIN(Current_List) AS list ,COUNT(*) AS cnt ,SUM(NoContact_90Days) AS

问题 I am trying to write a generic database connector class in python. For this I want to first check what drivers are installed on the machine and throw an error if the required drivers are missing in the machine. Is there a way to do this in python? 回答1: I realise this is a late reply ... but just stumbled across the answer myself; in case anyone else is looking for an answer. pyodbc has a method which returns a list of installed ODBC drivers. Granted, it's just a list of the driver names, so

问题 I am trying to write a generic database connector class in python. For this I want to first check what drivers are installed on the machine and throw an error if the required drivers are missing in the machine. Is there a way to do this in python? 回答1: I realise this is a late reply ... but just stumbled across the answer myself; in case anyone else is looking for an answer. pyodbc has a method which returns a list of installed ODBC drivers. Granted, it's just a list of the driver names, so

问题 I am going to be using a C library to connect and use a PostgreSQL database, I was wondering what are the pros and cons to ODBC and Libpq. From what I can tell, libpq seems to be faster but I was not able to get any clear answers or benchmarks. Also, is there any other library that might be better then ODBC/Libpq. 回答1: ODBC is useful if you want a standard adapter that speaks a similar API for different databases. I personally think it's an awful API, but it's widely understood and well

问题 I am going to be using a C library to connect and use a PostgreSQL database, I was wondering what are the pros and cons to ODBC and Libpq. From what I can tell, libpq seems to be faster but I was not able to get any clear answers or benchmarks. Also, is there any other library that might be better then ODBC/Libpq. 回答1: ODBC is useful if you want a standard adapter that speaks a similar API for different databases. I personally think it's an awful API, but it's widely understood and well

问题 I'm trying to connect to SQL server 2000 installed on Windows server 2003 from Windows Server 2008 R2 using Python 3.4 and pyodbc module. Those servers are in different AD domains. Windows only authentication is enabled on SQL server and I can't change that. drv = '{SQL server}' svr = 'sql.my-domain.local' usr = 'my-domain.local\testuser' pwd = 'password' db = 'testdb' pyodbc.connect(driver=drv, server=svr, user=usr, password=pwd, database=db) The connection above fails with the following