Executing a script without user intervention at a set time?

Question

MySQL

You need to write a script that will change the data in the mysql database.
For example - November 1 at 12:30:45 to change the number in a specific cell.
And this should happen without user intervention.
I know cron but there the minimum interval is 1 minute.
How can this be done without a heavy load on the server?
I use node.js + socket.io

Answer 1

https://dev.mysql.com/doc/refman/8.0/en/create-eve...
or kroner for November 1 at 12:30 and in the script slip for the required number of seconds.
or systemd.