MySQL database on off and view function functions

When you apply MySQL, you may encounter a situation where you cannot create a function. The following error message appears:

ERROR 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)

That's because it's not turned on.

Enable MySQL function:

SET GLOBAL log_bin_trust_function_creators=1;

Turn off the MySQL function:

SET GLOBAL log_bin_trust_function_creators=0;

Check status:

show variables like '%func%';