SQL 語句按月份統計查詢

// SQL 語句按月份統計查詢
 select  year(createdate) 年,
 month(createdate) 月,
 count(1) from xx 
 where (userid in (select id from cms_admin where userid='392') or userid='392')
 group by year(createdate),
 month(createdate)
 order by year(createdate) desc,month(createdat) desc;