橙色带 MySQL 数据导入

Question

I've got data in a MySQL DB and would like to get it into Orange. So I install Orange 2.7, starting orange-canvas and how would I go on now?

There are Add-Ons for MySQL: https://github.com/biolab/orange/tree/master/Orange/orng but how are they being installed? (and where?)
And if installed - how can I connect them to a Data Table component?

Answer 1

These are not add-ons but modules you already have. See documentationhttp://docs.orange.biolab.si/reference/rst/Orange.data.sql.html

If you want to access SQL from canvas, open Preferences / Categories and enable Prototypes. This will add a new widget category with a lot of weird experimental stuff. There are two different widgets for fetching data from SQL.

Orange 3 (still very much in beta, though) has a much better support for DB, but for now only for Postgres. If you don't mind switching, you should check it.

Answer 2

我使用的解决方法如下： 1. php 代码查询mysql 数据库，并创建一个制表符分隔文件（Orange 之外） 2. 在Orange 中使用python 脚本，使用pandas 加载数据。

Answer 3

Let me try to answer your second question, "How are Add-Ons being installed?", in respect to the first one, for Orange3 (assuming that you upgraded in the meantime):

Orange3 is distributed with its own Python framework, including the pip binary (a package installer, "pip installs packages").

The Orange3 docs [1] tell us which python module to take: pymssql .

In my case, on MacOS, the installation path is /Applications/Orange3.app/ .

So,

• let's open a terminal
• and execute this command:

   /Applications/Orange3.app/Contents/MacOS/pip install pymssql

• actually and practically, we had to do this:

   /Applications/Orange3.app/Contents/MacOS/pip install Cython /Applications/Orange3.app/Contents/MacOS/pip install "pymssql<3.0"

• then start Orange3 and you should be fine.

HT still H

[1] https://orange-visual-programming.readthedocs.io/widgets/data/sqltable.html

Answer 4

conda install pymssql对我conda install pymssql ，它在 SQL 表配置中启用了“SQL Server”，但是我还没有能够让 mysql 连接器工作。