MySQL 8.4 Release Notes
DROP FUNCTION 语句用于删除存储函数和可加载函数:The DROP FUNCTION statement is used
to drop stored functions and loadable functions:
有关丢弃存储函数的信息,请参见 第 15.1.29 节,“DROP PROCEDURE 和 DROP FUNCTION 语句”。For information about dropping stored functions, see Section 15.1.29, “DROP PROCEDURE and DROP FUNCTION Statements”.
有关丢弃可加载函数的信息,请参见 第 15.7.4.2 节,“DROP FUNCTION Statement for Loadable Functions”。For information about dropping loadable functions, see Section 15.7.4.2, “DROP FUNCTION Statement for Loadable Functions”.