mysql教程 this function has none of deterministic
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)
ysql> show variables like '%func%';
+---------------------------------+-------+
| variable_name                   | value |
+---------------------------------+-------+
| log_bin_trust_function_creators | off   |
+---------------------------------+-------+
1 row in set (0.00 sec)

mysql> set global log_bin_trust_function_creators=1;
query ok, 0 rows affected (0.00 sec)

mysql> show variables like '%func%';
+---------------------------------+-------+
| variable_name                   | value |
+---------------------------------+-------+
| log_bin_trust_function_creators | on    |
+---------------------------------+-------+
1 row in set (0.00 sec)

mysql>