Question

Example MySQL;

username work date(TIMESTAMP)

x        1    2012-08-08 12:15:33
x        3    2012-10-08 12:11:33
x        4    2012-08-08 11:15:33
x        2    2012-07-08 12:15:33

I want to take controle with just one rule;

X can only make 3 work mysql registry in 24 hours.

I could not find the true MySQL command for that.
How can I controle that via MySQL and php?

Answer 1

This will give you count of more than 3

select username from table
where date>=dateadd(current_date+interval -1 day)
group by username  
having count(*)>3