如何每隔1小时自动运行mysql查询？

Question

I've integer value in my database and I want to decrease it with every passing hour. How can I do it?

Answer 1

You don't need to decrement the value. You can just store the base value and create a view to calculate the value one the fly. Something like this:

create table hourly (
    base_value int,
    starttime datetime
);

Then:

create view v_hourly
    select base_value - timestampdiff(hour, starttime, now())
    from hourly;

The alternative is to set up a job that runs each hour to decrement the value, but that is not necessary.

Answer 2

You could use the mysql event scheduler. You can find more information and examples here: https://dev.mysql.com/doc/refman/5.7/en/create-event.html

Answer 3

if you have used MySQL then please create cronJOB. if you have used SQL then please create Scheduler.

And set time and execute stored procedure.