M1 Mac 上的 Pyodbc

问题描述

我正在尝试使用 pyodbc 连接到 Microsoft sql server 数据库.我不断收到错误

I am trying to connect to a Microsoft sql server database using pyodbc. I keep getting the error

错误: ('01000', "[01000] [unixODBC][Driver Manager]无法打开 lib 'ODBC Driver 17 for SQL Server': 找不到文件 (0) (SQLDriverConnect)")

Error: ('01000', "[01000] [unixODBC][Driver Manager]Can't open lib 'ODBC Driver 17 for SQL Server' : file not found (0) (SQLDriverConnect)")

检查 pyodbc.drivers() 没有结果

我根据提供的说明安装了 Microsoft ODBC 驱动程序 这里:

I installed the Microsoft ODBC driver according to the instructions provided here:

我运行了 odbcinst -j 产生了

DRIVERS............: /etc/odbcinst.ini 
SYSTEM DATA SOURCES: /etc/odbc.ini 
FILE DATA SOURCES..: /etc/ODBCDataSources
USER DATA SOURCES..: /Users/pawannandakishore/.odbc.ini
SQLULEN Size.......: 8
SQLLEN Size........: 8
SQLSETPOSIROW Size.: 8

但是当我到达 /etc 时，我找不到 odbcinst.ini 或 odbc.ini.他们似乎在 opt/homebrew/Cellar/

but when I got to /etc, I cannot find either odbcinst.ini or odbc.ini. They are seem to be in opt/homebrew/Cellar/

我真的很感激这方面的帮助.

I would really appreciate some help on this.

推荐答案

UPD:

您实际上可以在容器中使用 pyodbc 但容器应该在 x86_64 架构容器中构建和执行.为此，您需要将 platform 添加到 docker-compose.yml 或在容器运行期间(使用 docker 时)提供参数.您需要确保使用 buildx 构建容器！

UPD:

You actually can use pyodbc in the container but the container should be built and executed in the x86_64 arch container. In order to do this, you need to add the platform either to docker-compose.yml or provide an argument during container run (when using docker). You need to make sure that you are building a container using buildx!

码头工人:

• docker buildx build --platform linux/amd64 -t myimage .
• docker run --platform linux/amd64 myimage bash

Docker-compose:

Docker-compose:

version: "3.9"

services:
  web:
    image: myimage:latest
    build:
      context: ./
    platform: linux/amd64

原答案:

pyodbc 确实不支持 ARM 架构.我在 M1 上使用 pymssql 以连接到 MSSQL 服务器.

Original answer:

It's true that pyodbc does not support ARM architecture. I'm using pymssql on my M1 in order to connect to MSSQL server.

1. 您需要安装系统要求freetds-dev.对于 alpine 容器，它将是 apk add freetds-dev

1. You need to install the system requirement freetds-dev. For alpine container, it will be apk add freetds-dev

在 pip 要求中添加 pymssql 包.

In pip requirements add pymssql package.

使用简单脚本测试连接:

Test connection with simple script:

import pymssql
conn = pymssql.connect(server='mssql', user='SA', password='Passw@rd', database='master')
cursor = conn.cursor()
cursor.execute("""SELECT 1;""")

1. SqlAlchemy 连接应该如下所示

SQLALCHEMY_DATABASE_URI = (
    f"mssql+pymssql://{MSSQL_USER}:{MSSQL_PASSWORD}@{MSSQL_HOST}/{MSSQL_DB}?"
)

如果您需要在 M1 上运行 MSSQL 数据库 - 这是我对这个问题的回答 https://stackoverflow.com/a/66919852/11515610

If you need to run MSSQL database on M1 - here my answer on this problem https://stackoverflow.com/a/66919852/11515610

相关链接:

• 自适应服务器连接失败(DB-Lib 错误消息 20002，严重性 9)

https://docs.sqlalchemy.org/en/14/dialects/mssql.html#module-sqlalchemy.dialects.mssql.pymssql

https://docs.microsoft.com/en-us/sql/connect/python/pymssql/step-1-configure-development-environment-for-pymssql-python-development?view=sql-server-ver15

https://pymssql.readthedocs.io/en/stable/pymssql_examples.html

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