Hive子查詢的別名重複的BUG
阿新 • • 發佈:2019-02-16
以下SQL查出來的user_id 全為0,似乎是從ods.bbs_topic讀取的user_id。將外層的別名c改成t以後,user_id取值正常
select
user_id
from
(
select
a.user_id
from ods.bbs_praise a
inner join ods.bbs_reply b
on a.reply_id = b.id
inner join ods.bbs_topic c
on b.topic_id = c.id
where cast(from_unixtime(floor(a.create_time / 1000), 'yyyyMMdd') as bigint)
= 20181029
and c.user_id = 0
and praise_mold = 0 and reply_id > 0
) c