使用pymssql时如何传递连接参数“ ApplicationIntent = ReadOnly”

Question

I only have readonly access to a SQL Server db. How do I pass connection parameter "ApplicationIntent=ReadOnly" when using pymssql to connect to the database? If pymssql doesn't support it, is there any other python library that I can use?

Answer 1

The only way to configure readonly connection intent with pymssql seems to be to configure freetds on which it's based, but it did not work out for me. I've had to use pyodbc instead of pymssql

from pyodbc import connect
conn = connect(
    'DRIVER={ODBC Driver 17 for SQL Server};SERVER=' + host + ';PORT=' + port + ';DATABASE='
    + database + ';UID=' + user + ';PWD=' + password + ';ApplicationIntent=ReadOnly')

Answer 2

Because pymssql is dependent on FreeTDS You really need to address the connection parameters to your MS-SQL server used by FreeTDS

Because ApplicationIntent is listed in the freetds user guide as an option you should be able to use it.

Answer 3

pyodbc has a readonly parameter. For example:

import pyodbc
conn = pyodbc.connect(driver='{SQL Server}', host=Server, database=Database,
                  trusted_connection='yes', user='', password='', readonly = True)