To connect to a SQL Server database with pyodbc, you need to have the following components installed:

Python

pyodbc

A supported version of the Microsoft ODBC Driver for SQL Server

To install pyodbc, you can use pip:

pip install pyodbc

Once you have installed the necessary components, you can use the following Python code to connect to a SQL Server database:

import pyodbc conn = pyodbc.connect('Driver={SQL Server};' 'Server=server_name;' 'Database=database_name;' 'Trusted_Connection=yes;') cursor = conn.cursor() cursor.execute('SELECT * FROM table_name') for row in cursor: print(row)

In the code above, you will need to replace "server_name" with the name of your SQL Server instance, "database_name" with the name of your database, and "table_name" with the name of the table you want to query.

If you need to connect to a SQL Server database that is not on your local machine, you will need to specify the server name as an IP address or a fully qualified domain name. You will also need to specify the port number if the SQL Server instance is not using the default port (1433). For example:

conn = pyodbc.connect('Driver={SQL Server};' 'Server=192.168.1.1,1433;' 'Database=database_name;' 'Trusted_Connection=yes;')

If you need to connect to a SQL Server database using a SQL Server authentication, you will need to specify the "UID" and "PWD" parameters in the connection string. For example:

conn = pyodbc.connect('Driver={SQL Server};' 'Server=server_name;' 'Database=database_name;' 'UID=user_name;' 'PWD=password;')