From: James Card (James.Cardcalcad.com)
Date: Mon Oct 08 2007 - 12:49:01 CDT

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On Sat, 06 Oct 2007 00:25:04 -0700, Werner Van Belle <wernersigtrans.org>
wrote:

> Hello,
>
> On Friday 05 October 2007 01:11:35 James Card wrote:
>> The application I'm working on uses MySQL 5.0.41 and we also need to
>> retrieve some data from a SQL-Server database in another department.
>> SQL-Server has a feature that I haven't tested) that allows it to make
>> an ODBC connection to a foreign database and treat its tables as if
>> they were local.
>>
>> Is there any way to accomplish something similar in MySQL? I'd love to
>> be able to create a view that joins data from my local tables with that
>> from SQL_Server.
>
> Did you get any response ? I'm quite interested in this question too.
> Recently I had to join around 1 G of local data with the genome
> databases in Germany and found that I either had to upload 1G of data to
> a temporary table or download 54G of data. Neither was particularly
> inspiring, so it would have been nice if I could just use various
> databases through the same local server.
>
> Are there any solutions for this kind of problem ?

I received one response and it said "use an App whose ConnectionManager
will establish 2 connections the 1st one to SQLServer and one connection
for MySQL" -- in other words: no, MySQL doesn't do this; your application
code would have to retrieve the two datasets separately and create the
join in memory. Way beyond the budget for this simple project. I ended up
writing separate queries against the two databases; not as simple and
elegant as a single query would have been, and the code was a bit more
complex, but it works.

--
James Card
209-578-5580

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