我有一张Hive桌
id name .... 1 a 2 a 3 a 4 b 5 b 6 b 7 a
需要找到名字出现次数的平均值，
name avg a 0.57 (4/7) b 0.42 (3/7)
请给我提个问题。
bq8i3lrv1#
select name ,round (count(*) / sum(count(*)) over (),2) as avg from mytable group by name order by name ;
+------+------+ | name | avg | +------+------+ | a | 0.57 | | b | 0.43 | +------+------+
1条答案
按热度按时间bq8i3lrv1#