--! qt:dataset:src | |
set hive.mapred.mode=nonstrict; | |
explain extended | |
select key, c, m from | |
( | |
select key, c, 1 as m from (select key, count(key) as c from src group by key)s1 | |
union all | |
select key, c, 2 as m from (select key, count(key) as c from src group by key)s2 | |
)sub | |
where m = 1; | |
select key, c, m from | |
( | |
select key, c, 1 as m from (select key, count(key) as c from src group by key)s1 | |
union all | |
select key, c, 2 as m from (select key, count(key) as c from src group by key)s2 | |
)sub | |
where m = 1; |