The table was created with a storage engine or feature extension not available in the current MySQL version, causing query execution to fail.
MySQL Error 1112: ER_UNSUPPORTED_EXTENSION occurs when a table relies on an engine or feature your current MySQL build does not support. Install the missing plugin or upgrade MySQL, then rebuild or ALTER the table with a supported engine to resolve the issue.
Table '%s' uses an extension that doesn't exist in this
Error 1112 appears when MySQL encounters a table that was created with an extension, plugin, or storage engine that is not loaded or compiled into the running server version. MySQL refuses to read or modify the table and returns SQLSTATE 42000.
The message usually reads: Table 'db.table' uses an extension that doesn't exist in this MySQL version.
Applications that expect the table to be readable will fail until the extension mismatch is fixed.
The error surfaces during SELECT, INSERT, ALTER TABLE, or server startup when MySQL scans its data dictionary.
It is common after migrations that copy raw .ibd or .frm files between servers running different MySQL or MariaDB builds.
Resolving the error quickly is important because entire schemas can be blocked if data dictionary loading stops on the unsupported table.
Missing storage engine plugins (e.g., MyRocks, InnoDB disabled) trigger the error because MySQL cannot interpret the table metadata.
Version downgrade or cross-edition restores cause incompatibility when new features such as PARTITION, CHECK CONSTRAINT, or SPATIAL indexes are not recognized by the older server.
Custom compiled MySQL builds without optional extensions likewise reject tables built on fully-featured community editions.
First identify the unsupported extension by inspecting SHOW CREATE TABLE db.table; on a server that can open the table or by reading the .frm file with mysqlfrm.
Then choose one of three strategies: load the missing plugin, upgrade/downgrade MySQL to a version that supports the feature, or migrate the data into a new table that uses only supported options.
Importing an InnoDB table into a MySQL build with InnoDB disabled fails.
Re-enable the engine with --skip-innodb=0 or INSTALL PLUGIN innodb SONAME 'ha_innodb.so';.
Migrating a table from MariaDB with the Aria engine to MySQL 8.0 triggers the error. Convert the table to InnoDB on the source server before migration.
Restoring a dump that contains partitioned tables to MySQL 5.5 fails because partitions were not fully supported.
Upgrade to MySQL 5.7+ or remove PARTITION BY clauses.
Always use logical backups (mysqldump, MySQL Shell dump) instead of copying data files across versions. Logical dumps translate objects into portable SQL.
Standardize server versions across environments and automate plugin installation during provisioning.
CI checks can alert when dumps include unsupported features.
Galaxy’s modern SQL editor surfaces server version metadata and lints CREATE statements, warning you when you reference storage engines not available in your target environment.
ERROR 1286 ER_UNKNOWN_STORAGE_ENGINE arises when you explicitly reference an engine that is not compiled or installed.
ERROR 1031 ER_TABLE_CANT_HANDLE_FT means the target engine does not support full-text indexes. Converting to InnoDB resolves both.
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The table uses an engine such as MyRocks or TokuDB that is not installed or has been disabled at startup.
A newer feature like generated columns exists in the table definition but the current server is an older release that lacks the capability.
Moving tables between MariaDB and MySQL introduces proprietary extensions that the destination server cannot parse.
File corruption can misreport the engine type, tricking MySQL into flagging an unsupported extension.
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No. ER_UNSUPPORTED_EXTENSION fires when MySQL reads an existing table. UNKNOWN_STORAGE_ENGINE occurs during CREATE when you reference an unavailable engine.
Sometimes MySQL will start but omit the table. Queries touching it will still fail, so you should fix or drop the object promptly.
Upgrading to a version that supports the missing feature generally resolves the issue, but confirm plugin availability before migration.
Galaxy’s context-aware linter validates engine and feature compatibility against your connected server, alerting you before deployment.
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