Question

For example MySQL NOW() returns 2013-01-09 12:20:06, so i need to count all rows as specified below.

Current:

• Hour: from 2013-01-09 12:00:00 till NOW()
• Day: from 2013-01-08 00:00:00 till NOW()
• Month: from 2013-01-01 00:00:00 till NOW()

Previous

• Hour: 2013-01-09 11:00:00 – 2013-01-09 12:00:00
• Day: 2013-01-08 00:00:00 – 2013-01-08 23:59:59
• Month: 2012-12-01 00:00:00 – 2013-01-01 00:00:00

I tried something like:

WHERE
    `date` >= DATE_FORMAT(NOW(), '%Y-%m-%d %h:00:00')
AND `date` >= DATE_SUB(
    DATE_FORMAT(NOW(), '%Y-%m-%d %h:00:00'),
    INTERVAL 10 MONTH
)

But may be there is more convenient way?

Answer 1

Try this:

For CURRENT:

SELECT DATE_FORMAT(NOW(), '%Y-%m-%d %H:00:00');
SELECT DATE_FORMAT(NOW(), '%Y-%m-%d 00:00:00');
SELECT DATE_FORMAT(NOW(), '%Y-%m-01 00:00:00');

For PREVIOUS:

SELECT DATE_FORMAT(NOW(), '%Y-%m-%d %H:00:00'), DATE_SUB(DATE_FORMAT(NOW(), '%Y-%m-%d %H:00:00'), INTERVAL 1 HOUR);
SELECT DATE_FORMAT(NOW(), '%Y-%m-%d 00:00:00'), DATE_SUB(DATE_FORMAT(NOW(), '%Y-%m-%d 00:00:00'), INTERVAL 1 DAY);
SELECT DATE_FORMAT(NOW(), '%Y-%m-01 00:00:00'), DATE_SUB(DATE_FORMAT(NOW(), '%Y-%m-01 00:00:00'), INTERVAL 1 MONTH);

Check this link SQL FIDDLE DEMO