I am having trouble figuring out the configuration steps and code that I need to access a SQL Server database via Windows Authentication from a Mac.
On the Windows machine I can use the following code:
import getpass
import pypyodbc
cnxn_string = (r"DRIVER={ODBC Driver 13 for SQL Server};"
r"SERVER=[Host]\[Instance];"
r"DATABASE=[Database]"
r"UID=[Domain]\[Username];"
r"Trusted_Connection=yes;"% (getpass.getuser()))
cnxn = pypyodbc.connect(cnxn_string)
But on a Mac I believe I need to re-enter my username and password.
How can I create a similar python connection to the SQL Server, via Windows Authentication, on my mac? I am open to any python modules (it does not have to be pypyodbc).
Using FreeTDS + pymssql it's pretty trivial to connect.
Note: I would recommend using FreeTDS 1.0+ and pymssql 2.2.0+ because there are compatibility issues with FreeTDS 1.0 and pymssql 2.1.3.
Here's an example using pymssql:
import pymssql
pymssql.connect(server="myserver\\myinstance",
user="mydomain\\myuser",
password="mypassword",
database="mydatabase")
Note: the instance is parsed from the server using the backslash character, but we need to escape this because this is also the escape character. The same can be said for parsing the Active Directory domain from the user.
Related
I am connecting to an Oracle DB using LDAP and the Python cx_Oracle library. I have proper sqlnet.ora, ldap.ora and tnsnames.ora files. On my Windows machine everything works fine using the 12.1 Oracle client and the following Python code:
import cx_Oracle
connection = cx_Oracle.connect(user/password#db, mode=cx_Oracle.SYSDBA)
I have installed the Oracle instant client 12.1 on my Linux machine (Debian) following the zip file installation method advised on the Oracle website (at the bottom of https://www.oracle.com/be/database/technologies/instant-client/linux-x86-64-downloads.html).
ldconfig correctly lists the oracle client libraries and their paths.
I copy the exact same sqlnet.ora, ldap.ora and tnsnames.ora files from my Windows machine to my Linux machine
in /opt/oracle/instantclient_12_1/network/admin, as advised by the cx_Oracle documentation.
Now running the above Python code on my Linux machine I have the following error:
cx_Oracle.DatabaseError: ORA-12154: TNS:could not resolve the connect identifier specified
I tried as well setting the environment variable TNS_ADMIN=/opt/oracle/instantclient_12_1/network/admin and ORACLE_HOME=/opt/oracle/instantclient_12_1/ with no success neither
Could any of you help me debugging this and understand why the client config on my Linux machine does not work?
Installed the latest 19 client and everything works as expected.
I was trying to retrieve some data from a Sybase database using python, but I could not make it.
I tried with sqlanydb but it didn't work. I also tried with Devart ODBC Driver which is a trial version driver. But I'm looking for something which is a free/open source.
I have tried with pypyodbc and listed the driver which is in my system by running the following code.
>>> import pypyodbc
>>> pypyodbc.driver()
>>> ['SQL Server', 'SQL Server']
So right now I didn't know which driver I have to use and how to configure it in windows 10 so that I can connect to Sybase.
If you set up an ODBC source using regular ODBC Admin, let's call the DSN ShubhamSybDB, then your connection should open as simple as this (from a .py code):
import pyodbc
conn = pyodbc.connect('DSN=ShubhamSybDB;UID=<username>;PWD=<password>')
Is there a way for python to connect to MS SQL Server using Windows Authentication, even when not running the python app on a windows box?
I'm trying to do this with pymssql, but the examples mostly seem to assume that you're running on windows.
If there is a way to make this connection using some other library, please feel free to suggest, but I do like how pymssql is simple to install and deploy via pip.
I want to connect to 2005/2008 databases, and I'm running Ubuntu 13.04 (but I can upgrade to a later Ubuntu if it makes a difference)
SOLUTION:
It turns out that pymssql can connect to my database via my windows username and password. But to do so, I need to pass the actual username/password like this:
pymssql.connect(host, 'THEDOMAIN\\theusername', 'thepassword', db)
The solution EkoostikMartin provided is still good though (if you do not want to store a password somewhere, which is probably the point to windows auth anyway)
You can use the SQL Server ODBC driver for linux, and set up Kerberos.
See this article - http://technet.microsoft.com/en-us/library/hh568450.aspx
I'm trying to install MYSQLdb on a windows client. The goal is, from the Windows client, run a python script that connects to a MySQL server on a LINUX client. Looking at the setup code (and based on the errors I am getting when I try to run setup.py for mysqldb, it appears that I have to have my own version of MySQL on the windows box. Is there a way (perhaps another module) that will let me accomplish this? I need to have people on multiple boxes run a script that will interact with a MySQL database on a central server.
you could use a pure python implementation of the mysql client like
pymysql
(can be used as a dropin-replacement for MySQLdb by calling pymysql.install_as_MySQLdb())
MySql-Connector
You don't need the entire MySQL database server, only the MySQL client libraries.
It's been a long time since I wrote python db code for windows...but I think something like this should still work.
If you're running the client only on windows machines, install the pywin32 package. This should have an odbc module in it.
Using the windows control / management tools, create an odbc entry for either the user or the system. In that entry, you'll give the connection parameter set a unique name, then select the driver (in this case MySQL), and populate the connection parameters (e.g. host name, etc.) See PyWin32 Documentation for some notes on the odbc module in pywin32.
Also, see this post: Common ways to connect to odbc from python on windows.
I am unable to connect to mySQl db using pyodbc.
Here is a snippet of my script:
import pyodbc
import csv
cnxn = pyodbc.connect("DRIVER={MySQL ODBC 3.51 Driver}; SERVER=localhost;DATABASE=mydb; UID=root; PASSWORD=thatwouldbetelling;")
crsr = cnxn.cursor()
with open('C:\\skunkworks\\archive\\data\\myfile.csv','r') as myfile:
rows = csv.reader(myfile, delimiter=',', quotechar='"')
for row in rows:
insert_str = 'INSERT into raw_data VALUES(something, something)'
print insert_str
#crsr.execute(insert_str)
cnxn.commit()
myfile.close()
I get this error at the pyodbc.connect() line:
pyodbc.Error: ('IM002', '[IM002]
[Microsoft][ODBC Driver Manager] Data
source name not found and no default
driver specified (0)
(SQLDriverConnectW)')
I have another question regarding this error (and Python scripts in general). When I run this as a script, it fails silently (I was expecting a stack trace). I have to type each line in manually to find where the error occured.
I am being a bit lazy for now (no exception handling) - is this normal behaviour of a Python script without exception handling to fail silently?
[Edit]
I am not using mysqldb because I am already using pyodbc to extract my data from another source (MS Access). Ok, not a good reason - but I am already grappling with pyodbc and I dont really fancy having to wrestle with another library/module/package(whatever its called in Python) for a "one off" job. I just want to move my data of from various data sources in the Windows environment to mySQl on Linux. once on Linux, I'll be back on terra firma.
That is the entire 'script' right there. I just saved the code above into a file with a .py extension, and I run python myscript.py at the command line. I am running this on my XP machine
I had this same mistake so I went over all the version I was using for the connection. This is what I found out:
For Python 2.7 32 bits:
- pyodbc must be 32bits
- the DB Driver must be 32bits. (Microsoft Access should be 32 bits too)
For those who use the 64 bits version. You should check that everything is 64 bits too.
In my case I was trying to connecto to an Oracle DB and Microsoft Access DB so I had to make the following components match the architechture version:
pyodbc (MS Access)
python
cx_Oracle (Oracle dialect for SQLalchemy)
Oracle instantclient basic (Oracle. Do not forget to create the environment variable)
py2exe (Making the excecutable app)
Is that your driver name right?
You can check your driver name in
Windows -> Control panel -> System and security -> Administrative tools -> ODBC Data Sources -> Driver tab
then copy the river name to the first parameter
like
cnxn = pyodbc.connect("DRIVER={MySQL ODBC 5.3 ANSI Driver}; SERVER=localhost;DATABASE=books; UID=root; PASSWORD=password;")
And my problem solved
or you may not install the driver and the step is simple.
MySQLdb (or oursql) and pyodbc both have the same interface (DB-API 2), only you don't have to deal with ODBC's issues if you use the former. I strongly recommend you consider using MySQLdb (or oursql) instead.
First, According to the official docs, if you want to connect without creating a DSN, you need to specify OPTION=3 in the connection string:
ConnectionString = "DRIVER={MySQL ODBC 3.51 Driver};SERVER=localhost;DATABASE=test;USER=venu;PASSWORD=venu;OPTION=3;"
If that fails to work, I'd further troubleshoot by creating a DSN.
Second, no Python should not be failing silently. If that is the case when you run your script, there is something else amiss.
only need install mysql-connector-odbc-3.51.28-win32.msi.
and pyodbc-2.1.7.win32-py2.7.exe.
of course, you have ready installed MySQL and python 2.7.
example:
import pyodbc
cndBase = pyodbc.connect("DRIVER={MySQL ODBC 3.51 Driver}; SERVER=localhost; PORT=3306;DATABASE=nameDBase; UID=root; PASSWORD=12345;")
ptdBase = cndBase.cursor()
query_str = 'SELECT* FROM nameTabla;'
rows = ptdBase.execute(query_str)
for rw in rows:
print list(rw)`enter code here`
I was getting the same error. It seemed the driver i was using to make the connection was not the driver installed in my system.
Type ODBC on windows run and select ODBC Data Source(32/64) based on where you have installed the driver.
From there click on System DSN and click add. From there you can see the MySQL driver installed in your system. Use the ANSI driver in your code where you are making the connection.