I want to customize the function today, but the mysql console reports an error
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)
It means I don’t have the function function enabled

show variables like '%func%';		

Here I have turned on the function function as on

setting parameters to turn on the function function

set global log_bin_trust_function_creators=1;