<p>MySQL throws error 1432 when a FEDERATED table cannot be created because the CONNECTION string or data source definition is not in the expected format.</p>
<p>MySQL Error 1432 ER_FOREIGN_DATA_STRING_INVALID_CANT_CREATE appears when the FEDERATED table CONNECTION string is malformed. Verify host, port, database, and table names, then recreate the table with a correct CONNECTION string to resolve the issue.</p>
Can't create federated table. The data source connection
Error 1432 fires when CREATE TABLE ... ENGINE=FEDERATED uses a CONNECTION clause that MySQL cannot parse. The server stops table creation and returns ER_FOREIGN_DATA_STRING_INVALID_CANT_CREATE with SQLSTATE HY000.
The message means the CONNECTION string pointing to the remote data source has missing or misplaced elements, such as protocol, host, port, username, or table name.
A malformed CONNECTION string is the primary trigger. MySQL expects the pattern scheme://user:password@host:port/schema/table but any deviation breaks parsing.
The error also arises when unsupported characters, unescaped colons, or trailing spaces slip into the definition, or when the ENGINE is not compiled with federated support.
First, confirm that the federated plugin is loaded with SHOW PLUGINS. Then rebuild the CONNECTION string, ensuring each segment appears in the correct order and is URL encoded if special characters exist.
After correcting the string, drop the failed table if it partially exists and run CREATE TABLE again. Use TEST CONNECTION on MySQL 8.0.31+ to validate connectivity before creation.
Developers often copy a sample CONNECTION string and forget to change the database or table section, producing this error. Replace placeholders with real names.
If the remote MySQL instance listens on a non default port, omitting the port number will fail. Append :3307 or the appropriate port to the host segment to succeed.
Store CONNECTION strings in a Galaxy Collection snippet or environment variable so teammates reuse a tested format.
Always load the federated plugin at startup and automate validation in CI using SHOW CREATE TABLE output to catch format issues early.
Error 1425 (ER_CANT_CREATE_FEDERATED_TABLE) appears when the remote table cannot be opened even though the CONNECTION string is correct. Ensure PRIVILEGES and network reachability.
Error 1430 (ER_FOREIGN_DATA_STRING_INVALID) occurs during ALTER TABLE when the updated CONNECTION string is invalid. Apply the same validation steps as above.
The scheme://user:pass@host:port/schema/table pattern is broken or reordered, causing MySQL to reject it.
User, password, host, or port segments are omitted, so the parser cannot resolve the target server.
Characters like @, :, or slash inside passwords are not encoded, confusing the delimiter logic inside the parser.
If the federated storage engine is disabled, MySQL stops creation and sometimes reports the same format error.
Occurs when the remote table or credentials are unreachable even though the string is valid.
Raised during ALTER TABLE when an updated CONNECTION string is malformed.
Appears when SSL options are required but absent in the CONNECTION string.
Yes. Avoid ENGINE=FEDERATED or remove the federated plugin to force local tables and bypass the parser.
Some managed services disable the plugin. Check with the provider and request enablement or switch to FEDERATEDX if available.
Add ?sslca=path/to/ca.pem at the end of the URI. Ensure the file path is accessible to the MySQL server.
Production may run a newer MySQL version with stricter parsing or different plugin configuration. Revalidate and encode special characters.
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