How to Connect MySQL Enterprise Edition in PostgreSQL

What is MySQL Enterprise Edition integration in PostgreSQL?

PostgreSQL can query MySQL Enterprise Edition through the mysql_fdw foreign data wrapper. The extension lets you treat a remote MySQL database as local tables, enabling cross-database joins, analytics, and migrations without exporting CSV files.

How to install mysql_fdw extension?

Install the wrapper package on the PostgreSQL host, then run:

CREATE EXTENSION IF NOT EXISTS mysql_fdw;

The command adds the necessary C library and SQL functions to your cluster.

How to create a foreign server for MySQL Enterprise Edition?

CREATE SERVER mysql_ee_srv
FOREIGN DATA WRAPPER mysql_fdw
OPTIONS (host 'mysql-ee.prod', port '3306');

This statement registers the remote MySQL Enterprise Edition instance so PostgreSQL knows where to forward queries.

How to map PostgreSQL users to MySQL credentials securely?

CREATE USER MAPPING FOR app_readonly
SERVER mysql_ee_srv
OPTIONS (username 'report_user', password '••••••');

Use distinct read and write accounts, store passwords in pgpass, and restrict roles with ALTER ROLE.

How to import MySQL tables as PostgreSQL foreign tables?

IMPORT FOREIGN SCHEMA ecommerce
FROM SERVER mysql_ee_srv
INTO public
OPTIONS (charset 'utf8mb4');

PostgreSQL creates matching foreign tables—customers, orders, products, and orderitems—that point to MySQL Enterprise datasets.

How to query and join MySQL Enterprise data inside PostgreSQL?

SELECT c.name, SUM(oi.quantity * p.price) AS lifetime_value
FROM customers c
JOIN orders o ON o.customer_id = c.id
JOIN orderitems oi ON oi.order_id = o.id
JOIN products p ON p.id = oi.product_id
GROUP BY c.name
ORDER BY lifetime_value DESC
LIMIT 10;

The planner pushes filters and aggregates down to MySQL when possible, reducing network traffic.

Best practices for performance and security?

Add relevant indexes in MySQL, set use_remote_estimate to true for large tables, and limit exposed columns. Prefer SSL connections and rotate passwords regularly.

What common mistakes should I avoid?

Do not forget to match character sets; mismatches cause garbled text. Avoid importing massive tables without WHERE filters—use LIMIT or partitions.

Recap

Install mysql_fdw, create a server, map users, import schemas, then query as if the MySQL Enterprise Edition tables were native PostgreSQL objects—enjoy seamless cross-database analytics.