我们如何查看特定 MySQL 存储函数的源代码？

mysql> SHOW CREATE FUNCTION Hello\G
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           Function: Hello
           sql_mode:
ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
Create Function: CREATE DEFINER=`root`@`localhost` FUNCTION `Hello`(S Varchar(二0)) RETURNS varchar(两0) CHARSET latin1 DETERMINISTIC
RETURN CONCAT('Hello, ',S,'!')

character_set_client: cp850
collation_connection: cp850_general_ci
  Database Collation: latin1_swedish_ci
1 row in set (0.00 sec)