EC
1458
MySQLERRORNotableDDLHIGH confidence

Cannot create FEDERATED table due to misconfigured data source

Production Risk

Low — DDL error; the table will not be created.

What this means

ER_CANT_CREATE_FEDERATED_TABLE (1458, SQLSTATE HY000) is raised when MySQL cannot create a FEDERATED table because of a misconfigured or unreachable data source.

Why it happens
  1. 1The FEDERATED storage engine is not enabled on the server
  2. 2Remote table structure does not match the local CREATE TABLE definition
  3. 3Authentication failure to the remote server
How to reproduce
trigger — this will error
trigger — this will error
-- If FEDERATED engine is disabled:
CREATE TABLE fed (id INT) ENGINE=FEDERATED
CONNECTION='mysql://user:pass@host/db/t';

expected output

ERROR 1458 (HY000): Can't create federated table. The data source connection string is not in the correct format

Fix

Enable the FEDERATED engine and verify configuration

Enable the FEDERATED engine and verify configuration
-- Check if FEDERATED is enabled:
SHOW ENGINES;

-- Enable in my.cnf:
-- [mysqld]
-- federated

-- Verify remote table exists with matching structure

Why this works

The FEDERATED engine must be explicitly enabled in MySQL configuration before creating federated tables.

Sources
Official documentation ↗

MySQL 8.0 — 1458 ER_CANT_CREATE_FEDERATED_TABLE

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