DROP FUNCTION udf_name

DROP FUNCTION statement deinstalls a `user-defined function UDF with the given name. On success, the function is no longer available for use in subsequent queries. Pending concurrent queries will not be affected and the library unload, if necessary, will be postponed until those queries complete. Example:

mysql> DROP FUNCTION avgmva;
Query OK, 0 rows affected (0.00 sec)

CREATE PLUGIN plugin_name TYPE 'plugin_type' SONAME 'plugin_library'

Loads the given library (if it is not loaded yet) and loads the specified plugin from it. The known plugin types are:

• ranker
• index_token_filter
• query_token_filter

Refer to plugins for more information regarding writing the plugins.

mysql> CREATE PLUGIN myranker TYPE 'ranker' SONAME 'myplugins.so';
Query OK, 0 rows affected (0.00 sec)

DROP PLUGIN plugin_name TYPE 'plugin_type'

Marks the specified plugin for unloading. The unloading is not immediate, because the concurrent queries might be using it. However, after a DROP new queries will not be able to use it. Then, once all the currently executing queries using it are completed, the plugin will be unloaded. Once all the plugins from the given library are unloaded, the library is also automatically unloaded.

mysql> DROP PLUGIN myranker TYPE 'ranker';
Query OK, 0 rows affected (0.00 sec)