mysql - Join tables from multiple remote database -

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I have a mysql database on server A, postgrad database on server b and another mysql database on server i a combined result What is the method of joining the tables from the three servers to get it done in Ruby? If there is no Ruby, then another language will also be sufficient.

I need to get anywhere around some 1000 rows of data. The connecting data needs to push the elasticsearch I was going to use the _bulk api in elasticsearch.

If it is one stop, download the data from just two db and upload it to a third location. Do the job there

If this is a regular thing then it can put effort into connecting the database correctly. Provides postgresqual plugins that allow you to talk to a different database (postgresqual or other). Is one.

You define entries for each remote server, user mapping between local users and remote users, and then describe each table to use. After that you can treat them locally (though performance is usually very bad).

In theory, you can also write your own FDW plugin for Alicester Search but it does not seem to be currently available.

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