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https://issues.apache.org/jira/browse/HIVE-9513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14319562#comment-14319562
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Ashutosh Chauhan commented on HIVE-9513:
----------------------------------------
I tried query as posted and it failed to compile on various DBs (except mysql) :
{code}
create table staging (a int, b int);
select * from (
select * from ( select 1 as id , "foo" as str_1 from staging ) f
union all
select * from ( select 2 as id , "bar" as str_2 from staging ) g
) e ;
{code}
* Postgres 9.3 : ERROR: column "foo" does not exist: select * from ( select *
from ( select 1 as id , "foo" as str_1 from staging ) f union all select *
from ( select 2 as id , "bar" as str_2 from staging ) g ) e
* Oracle 11g : ORA-00904: "foo": invalid identifier : select * from ( select *
from ( select 1 as id , "foo" as str_1 from staging ) f union all select *
from ( select 2 as id , "bar" as str_2 from staging ) g ) e
* MS-SQL 2012 : Invalid column name 'foo'.: select * from ( select * from (
select 1 as id , "foo" as str_1 from staging ) f union all select * from (
select 2 as id , "bar" as str_2 from staging ) g ) e
* MySQL 5.6 : <Success with EmptyRS>.
Given above, we should check SQL standard, should allow this behavior only if
standard permits.
[~ErwanMAS] Are you migrating some workload to Hive. In that case, on which
system you were able to run this query? Else, you were simply playing with Hive.
> NULL POINTER EXCEPTION
> ----------------------
>
> Key: HIVE-9513
> URL: https://issues.apache.org/jira/browse/HIVE-9513
> Project: Hive
> Issue Type: Bug
> Components: CLI
> Affects Versions: 0.13.1
> Reporter: ErwanMAS
> Assignee: Navis
> Attachments: HIVE-9513.1.patch.txt, HIVE-9513.2.patch.txt
>
>
> NPE duting parsing of :
> {noformat}
> select * from (
> select * from ( select 1 as id , "foo" as str_1 from staging.dual ) f
> union all
> select * from ( select 2 as id , "bar" as str_2 from staging.dual ) g
> ) e ;
> {noformat}
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