Question

I have a mysql table,

For simplicity’s sake assume the following table was used

CREATE TABLE requests(
    id INT NOT NULL auto_increment,
    ipaddress VARCHAR(30) NULL,
    datetime DATETIME NULL,
    PRIMARY KEY(id)
);

Is it possible to return a result set for the count of distinct ip addresses in a 24 hour period, every day between now and and 180 days ago?

datetime               ipaddress
2012-10-25 00:00:00    30
2012-10-24 00:00:00    28
2012-10-24 00:00:00    22
2012-10-23 00:00:00    27
...                    ...

Answer 1

try this:

select DATE(`datetime`),count(distinct ipaddress) as ipaddress
from requests
where datediff(NOW(),datetime)<=180
group by DATE(`datetime`)