“登录失败”，带有 odbc_connect（原始）连接字符串；与 pyodbc 一起使用

Question

以下 pyodbc 连接工作正常：

import pyodbc
import pandas as pd
conn = pyodbc.connect(Driver='SQL Server',
                      Server='some_server_address,1433',
                      Database='some_db',
                      UID ='some_user',
                      PWD = 'some_password')

cursor = conn.cursor()
df = pd.read_sql_query('''select top 100 * from tableA''', conn)
cursor.close()
conn.close()

当我尝试使用 SQLalchemy 进行相同操作时，它失败了

from sqlalchemy.engine import URL
from sqlalchemy import create_engine
import sqlalchemy as sa
    
connection_string = "DRIVER={SQL Server};SERVER=some_server_address,1433;DATABASE=some_db;UID=some_user;PWD=some_password"
connection_url = URL.create("mssql+pyodbc", query={"odbc_connect": connection_string})
engine = create_engine(connection_url)
conn = engine.connect()

出现以下错误：

InterfaceError: (pyodbc.InterfaceError) ('28000', "[28000] [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'some_user'. (18456) (SQLDriverConnect); [28000] [Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'some_user'. (18456)")
(Background on this error at: https://sqlalche.me/e/20/rvf5)

我该如何修复它？

更新 正如下面的建议我尝试过

import pyodbc
import pandas as pd
connection_string = "DRIVER={SQL Server};SERVER=some_server_address,1433;DATABASE=some_db;UID=some_user;PWD=some_password"
conn = pyodbc.connect(connection_string)
    
cursor = conn.cursor()
df = pd.read_sql_query('''select top 100 * from tableA''', conn)
cursor.close()
conn.close()

一切都很顺利

Answer 1

您在 SQLAlchemy 中遇到了错误。此处已报道：

https://github.com/sqlalchemy/sqlalchemy/issues/11250

作为解决方法，您可以将单独的 kwargs 与

URL.create()

结合使用，类似于您对

.pyodbc.connect()

所做的操作：

import sqlalchemy as sa

engine = sa.create_engine(
    sa.URL.create(
        "mssql+pyodbc",
        username="howie",
        password="ab+cd",
        host="192.168.0.199",
        port=1433,
        database="test",
        query=dict(driver="SQL Server"),
    )
)