mysql每日数据统计

select a.click_date
from (
    SELECT curdate() as click_date
    union all
    SELECT date_sub(curdate(), interval 1 day) as click_date
    union all
    SELECT date_sub(curdate(), interval 2 day) as click_date
    union all
    SELECT date_sub(curdate(), interval 3 day) as click_date
    union all
    SELECT date_sub(curdate(), interval 4 day) as click_date
    union all
    SELECT date_sub(curdate(), interval 5 day) as click_date
    union all
    SELECT date_sub(curdate(), interval 6 day) as click_date
) a 

curdate()格式为2018-08-08 可使用字符串代替  当然返回的时间格式也是yyyy-MM-dd
可使用DATE_FORMAT(DATE_SUB(CURDATE(), INTERVAL 6 DAY),'%Y%m%d')   返回的格式20180808.  后边是格式，可相对应找到相应的格式