使用pyodbc导致错误:找不到数据源名称，并且未指定默认驱动程序 [英] Using pyodbc cause error: Data source name not found and no default driver specified

问题描述

我正在使用pyodbc连接SQL Server.我创建了这样的连接字符串:

I'm using pyodbc to connect SQL Server. I had created connection string like this:

from sqlalchemy import Table, Column, databases, Integer, String, ForeignKey, create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import session
engine = create_engine('mssql+pyodbc://sa:123@localhost/TrainQuizDB')
engine.connect()

TrainQuizDB是我在Sql Server中创建的数据库名称.

TrainQuizDB is database name that I created in Sql Server.

有关更多信息，我具有Windows 8.1 64bit，并且安装了python版本3.5.1 32bit，并且我从 http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyodbc (pyodbc-3.0.10-cp35-none-win32.whl). 但是当我尝试连接它时，会导致此错误:

For more information I have windows 8.1 64bit and I installed python version 3.5.1 32bit and I downloaded pyodbc from http://www.lfd.uci.edu/~gohlke/pythonlibs/#pyodbc (pyodbc-3.0.10-cp35-none-win32.whl). But when I try to connect it cause this error:

sqlalchemy.exc.DBAPIError: (pyodbc.Error) ('IM002', '[IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified (0) (SQLDriverConnect)')

我也已经测试了ODBC数据源中的连接，并且连接成功.

Also I have tested the connection In ODBC Data sources and it was successful.

推荐答案

如

基于主机名的连接不是首选的，但是受支持.必须明确指定ODBC驱动程序名称

Hostname-based connections are not preferred, however are supported. The ODBC driver name must be explicitly specified

因此，您需要将驱动程序名称添加到您的连接字符串中:

So, you need to add the driver name to your connection string:

engine = create_engine('mssql+pyodbc://sa:123@localhost/TrainQuizDB?driver=ODBC+Driver+17+for+SQL+Server')

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