如何将天数转换为年，月和日的格式

Question

我尝试从数天开始获得年数，月数和天数。我试过这个：

SELECT enddate,startdate,extract(month from enddate)-extract(month from startdate)
  FROM workexpdeails ;

Answer 1

SELECT 
  enddate
  ,startdate
  ,(YEAR(enddate)*12+MONTH(enddate)) - (YEAR(startdate)*12+MONTH(startdate)) 
   as diffmonths 
  ,DATEDIFF(enddate, startdate) as diffdays
FROM workexpdeails ;

请参阅：http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html