Extensions
Schema Cache
To avoid having to continuously fetch schema data from MySQL, DuckDB keeps schema information – such as the names of tables, their columns, etc. – cached. If changes are made to the schema through a different connection to the MySQL instance, such as new columns being added to a table, the cached schema information might be outdated. In this case, the function `mysql_clear_cache` can be executed to clear the internal caches.  
```sql
CALL mysql_clear_cache();
```