Can Python's MySQLDB Join Tables Across Different MySQL Servers?

Database Federation in Different Server Environments with MySQL and Python

In the realm of data management, the need to query and join data across multiple databases residing on disparate servers is often encountered. In this specific case, the question arises: is it feasible to establish joins between tables in databases A and B, situated on servers server1 and server2, respectively, using Python's MySQLDB?

The answer lies in employing either the FEDERATED Storage Engine or a workaround involving the use of a different DBMS as an intermediary platform.

FEDERATED Storage Engine:

The FEDERATED Storage Engine allows for the creation of virtual tables that reference data from other MySQL instances. By defining a FEDERATED table in database A that references a table in database B, you can execute queries against the virtual table as if the data were physically present in database A. This approach requires careful configuration and setup of user permissions across the different servers.

Using a Different DBMS as an Intermediary:

If the FEDERATED Storage Engine is not a suitable option, you can resort to an alternative strategy that involves using another DBMS as a bridging point. For instance, Microsoft SQL Server's linked servers feature enables the establishment of connections with other remote data sources, allowing you to execute queries that fetch data from multiple heterogeneous sources. The workaround involves setting up the linked servers and employing specific syntax to access the tables across the different databases.

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