有兩種寫法:
寫法一:over partition by 分析函數
SELECT * FROM (select eb_vipcode,eb_time,MAX(eb_time) over(partition by eb_vipcode)
as "atime" from eb_daskexpdateinfo) x where eb_time = "atime";
寫法二:group by
SELECT eb_vipcode,MAX(eb_time) AS "atime" FROM eb_daskexpdateinfo group by eb_vipcode