### 26.3.39 The INFORMATION\_SCHEMA TABLES\_EXTENSIONS Table

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 The [`TABLES_EXTENSIONS`](information-schema-tables-extensions-table.html) table (available as of MySQL 8.0.21) provides information about table attributes defined for primary and secondary storage engines.

Note

 The [`TABLES_EXTENSIONS`](information-schema-tables-extensions-table.html) table is reserved for future use.

 The [`TABLES_EXTENSIONS`](information-schema-tables-extensions-table.html) table has these columns:

* `TABLE_CATALOG`

   The name of the catalog to which the table belongs. This value is always `def`.

* `TABLE_SCHEMA`

   The name of the schema (database) to which the table belongs.

* `TABLE_NAME`

   The name of the table.

* `ENGINE_ATTRIBUTE`

   Table attributes defined for the primary storage engine. Reserved for future use.

* `SECONDARY_ENGINE_ATTRIBUTE`

   Table attributes defined for the secondary storage engine. Reserved for future use.

