![]() ![]() If none of the above helps, then you may consider instead of using a DSN, to define the full connection in your Python code (see first way above). If the DSN uses a trusted connection, you need to also specify it in your Python code as per below example: conn = nnect('DSN= dsn_name Trusted_Connection=yes ') If the DSN uses a username/password, you need to also specify it in your Python code as per below example: conn = nnect('DSN=dsn_name UID=user PWD=password') 32-bit ODBC Data Source Administrator if you are using a 32-bit version of Windows:Ĭheck 2 – Verify that the DSN is Correctly Referenced in Python Code.64-bit ODBC Data Source Administrator if you are using a 64-bit version of Windows:.In this case, we can further troubleshoot the issue, by performing the below checks.Ĭheck 1 – Verify that the DSN Name is ValidĬheck in ODBC Data Source Administrator that the DSN exists with the exact same name you are referencing it in your Python code.Īdditionally, you must check that the DSN indeed works. The error message we are examining in this post, indicates that we are trying to connect to SQL Server, using the second method, that is referencing an ODBC DSN and the process fails. Learn more about SQL Server Data Access from Python – Enroll to our Course!Įnroll to our online course “ Working with Python on Windows and SQL Server Databases” with an exclusive discount, and get started with Python data access programming for SQL Server databases, fast and easy! ( Lifetime Access, Q&A, Certificate of Completion, downloadable resources and more!) Here’s a code example, that references and ODBC DSN: conn = nnect('DSN=mynewdsn UID=user PWD=password') ![]() The second way, is to reference an ODBC DSN. The first way, is to define the full connection string in you Python code.įor example, in case you are using a username/password instead of a trusted connection, here’s a relevant example:Ĭonn = nnect('DRIVER= SERVER=server_name DATABASE=database_name Trusted_Connection=yes ') Specifying the Full Connection String in Python In Python, there are 2 main ways for connecting to SQL Server, using the pyodbc module and Microsoft ODBC Driver 17 for SQL Server. Ways of Connecting to SQL Server from Python Prior to sharing our tips for troubleshooting the issue, let’s discuss about the two main ways of connecting to SQL Server from Python. This article, provides useful troubleshooting tips, for the following error which you might get, under certain circumstances, when trying to connect to SQL Server from Python, using pyodbc: Data source name not found and no default driver specified (0) (SQLDriverConnect). ![]()
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