MySQL Query GROUP BY day / month / year

Is it possible to make a simple query to count how many records I have in a determined period of time like a year, month, or day, having a `TIMESTAMP` field, like: SELECT COUNT(id) FROM stats WHERE record_date.YEAR = 2009 GROUP BY record_date.YEAR Or even: SELECT COUNT(id) FROM stats GROUP BY record_date.YEAR, record_date.MONTH To have a monthly statistic.