MySQL Workbench报错“This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declara”

MySQL Workbench下create function时报错：
Error Code: 1418. This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you might want to use the less safe log_bin_trust_function_creators variable)

解决办法：
首先，查看全局变量log_bin_trust_function_creators的值，记不清完整名称，可以使用通配符查看

show variables like '%func%';

输出结果：

发现全局变量log_bin_trust_function_creators的值的值为OFF。
接下来，将该全局变量的值设置为ON（或1）。

set global log_bin_trust_function_creators=1;

之后，create function命令创建自定义函数成功。