Error
Error Code:
3658
MySQL Error 3658: Using Unsupported Functionality
Description
MySQL Error 3658 indicates that the server encountered a feature, syntax, or functionality in your query or command that is not supported. This typically means the specific operation is not available in your current MySQL version, server configuration, or the context in which it's being used.
Error Message
Feature %s is unsupported (%s).
Known Causes
4 known causesVersion Compatibility Issue
The SQL statement attempts to use a feature that was introduced in a newer MySQL server version or has been removed/deprecated in your current version.
Server Configuration Limitation
The specific feature or functionality is disabled or not configured correctly in the MySQL server's `my.cnf` file or runtime settings.
Storage Engine Requirement
The feature you are trying to use is specific to a particular storage engine (e.g., InnoDB, MyISAM) that is not enabled or active for the relevant table.
Contextual Usage Restriction
The feature is being used in an incorrect context where it is not allowed, such as outside a stored procedure or with an incompatible data type.
Solutions
3 solutions available1. Identify and Replace Unsupported Functionality medium
Determine which specific feature is causing the error and find an alternative supported by your MySQL version.
1
Examine the error message carefully. The `%s` placeholders will contain the name of the unsupported feature and the reason it's unsupported. For example, it might say `Feature 'JSON_TABLE' is unsupported (requires MySQL 8.0.19 or later)`. This tells you exactly what the problem is.
2
Consult the MySQL documentation for your specific version to understand the feature's purpose and available alternatives. Search for the unsupported feature name in the official MySQL manual.
For example, if the error is about `JSON_TABLE`, search for 'JSON_TABLE' in the MySQL 8.0 manual.3
Modify your SQL queries, stored procedures, or application code to use the identified alternative functionality. This might involve rewriting parts of your logic.
Example: If you're using a feature that requires a newer MySQL version, you might need to rewrite the query to use subqueries or joins if that functionality was available in an older version.4
Test your changes thoroughly to ensure the unsupported functionality is no longer being used and that the alternative works as expected.
2. Upgrade Your MySQL Server advanced
Update your MySQL server to a version that supports the required functionality.
1
Determine the minimum MySQL version required for the unsupported feature. This information is usually provided in the error message or the MySQL documentation.
Example: If the error indicates a feature requires MySQL 8.0.19, that's your target version.2
Plan your MySQL upgrade. This involves backing up your data, checking for compatibility issues with your existing databases and applications, and understanding the upgrade process for your specific operating system and installation method.
3
Perform the MySQL upgrade following the official MySQL documentation for your platform. This typically involves stopping the MySQL server, replacing the binaries, and running an upgrade utility.
Refer to the official MySQL documentation for detailed upgrade instructions: https://dev.mysql.com/doc/refman/8.0/en/upgrading.html4
After the upgrade, re-run your queries or application code that previously failed. If the upgrade was successful and the feature is now supported, the error should be resolved.
3. Review Application Logic and Dependencies medium
Ensure your application isn't inadvertently calling unsupported MySQL features, especially if using ORMs or libraries.
1
If you are using an Object-Relational Mapper (ORM) like SQLAlchemy, Hibernate, or an application framework that abstracts database interactions, check its documentation for version-specific compatibility with your MySQL version. The ORM might be generating SQL that uses unsupported features.
2
Examine the generated SQL. If possible, inspect the SQL queries that your application is sending to the database. Many ORMs have logging capabilities that can reveal the exact SQL being executed.
Example (SQLAlchemy): Configure logging to see executed queries.
python
import logging
logging.basicConfig()
logging.getLogger('sqlalchemy.engine').setLevel(logging.INFO)
3
Update your ORM or database driver to a version that is compatible with your MySQL server and supports the features you intend to use. Conversely, if you need to stick to an older MySQL version, you might need to downgrade your ORM/driver.
4
If the ORM is generating unsupported SQL, consider writing raw SQL queries for specific problematic operations or re-evaluating how the ORM is configured.