Pyodbc：登录超时已过期

Question

我正在尝试在本地系统上使用 pyodbc 连接到 MS SQL 服务器并在连接到实例时出现错误：

[2020-06-21 15:39:04.110750]: ('08001', '[08001] [Microsoft][ODBC Driver 13 for SQL Server]SQL Server Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF].  (-1) (SQLDriverConnect); [08001] [Microsoft][ODBC Driver 13 for SQL Server]Login timeout expired (0); [08001] [Microsoft][ODBC Driver 13 for SQL Server]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online. (-1)')

我的 SQL 服务器是 Express 2005 并尝试使用驱动程序：

{SQL 服务器的 ODBC 驱动程序 13}
{SQL 服务器的 ODBC 驱动程序 17}
{SQL 本机客户端}

我在 sqlcmd 中使用此命令进行测试：

C:\Users\Moein>sqlcmd -S '.\Moein' -U 'sa' -P 'xxxx'
HResult 0xFFFFFFFF, Level 16, State 1
SQL Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF].
Sqlcmd: Error: Microsoft SQL Native Client : An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections..
Sqlcmd: Error: Microsoft SQL Native Client : Login timeout expired.

我的代码：

import pyodbc

conn = pyodbc.connect(f'DRIVER={SQL Native Client};SERVER=.\Moein;DATABASE=Moein;UID=sa;PWD=xxxx',autocommit=True)
cursor = conn.cursor()

更多：

在 sqlcmd 中测试 -l 600 登录超时开关 > 未收到回复
测试 computername\instance 和 127.0.0.1\instance > 未更改
尝试在本地完全重新安装 sql 服务器 > 注意更改内容

Answer 1

我发现了我的问题

我将此连接字符串与管道模式一起使用：

conn = pyodbc.connect('DRIVER={ODBC Driver 13 for SQL Server};ServerName=Provider=SQLOLEDB.1;SERVER=.\testsv;DATABASE=test;Persist Security Info=False;UID=sa;PWD=xxxxx;Data Source=np:\.\pipe\MSSQL$testsv\sql\query',autocommit=True)

Pyodbc：登录超时已过期

Pyodbc: Login timeout expired

sql-server

pyodbc

python-3.x