Question

我想在Hive中执行以下查询 -

select * from supp a inner join trd_acct b
on
(a.btch_id = 11170 AND a.btch_id = b.btch_id)
OR (a.btch_id = 11164 AND a.supp_id = b.supp_id)

但是得到错误 -

FAILED：SemanticException [错误10019]：第3行：1或不支持 JOIN目前'supp_id'

Answer 1

您可以使用UNION解决此问题：

select * from supp a inner join trd_acct b
 on a.btch_id = 11170 AND a.btch_id = b.btch_id
UNION ALL
select * from supp a inner join trd_acct b
 on a.btch_id = 11164 AND a.supp_id = b.supp_id

或者您可以尝试CASE EXPRESSION：

select * from supp a
inner join trd_acct b
 on CASE WHEN a.btch_id = 11164 THEN a.supp_id 
         WHEN a.btch_id = 11170 THEN a.btch_id END
  = CASE WHEN a.btch_id = 11164 THEN b.supp_id
         WHEN a.btch_id = 11170 then b.btch_id END

Answer 2

以下查询在Hive（Hadoop）中正常工作 -

select * from supp a inner join trd_acct b
where
(a.btch_id = 11170 AND a.btch_id = b.btch_id)
OR (a.btch_id = 11164 AND a.supp_id = b.supp_id)

我已在Hive Console中测试过。

有条件地加入Hive

2 个答案: