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https://issues.apache.org/jira/browse/HIVE-14530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15445691#comment-15445691
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Jesus Camacho Rodriguez edited comment on HIVE-14530 at 8/29/16 12:16 PM:
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[~liwenhe], [~Spring], thanks for pointing this out. There was indeed a bug in
the logic introduced in HIVE-13639 to infer constant values that can be pull up
from the Union.
I have just uploaded the fix, and I added the queries in the description to the
testsuite.
was (Author: jcamachorodriguez):
[~liwenhe], [~Spring], thanks for pointing this out. There was indeed a bug in
the logic introduced in HIVE-13639 to infers constant values that can be pull
up from the Union.
I have just uploaded the fix, and I added the queries in the description to the
testsuite.
> Union All query returns incorrect results.
> ------------------------------------------
>
> Key: HIVE-14530
> URL: https://issues.apache.org/jira/browse/HIVE-14530
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.1.0
> Environment: Hadoop 2.6
> Hive 2.1
> Reporter: wenhe li
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-14530.patch
>
>
> create table dw_tmp.l_test1 (id bigint,val string,trans_date string) row
> format delimited fields terminated by ' ' ;
> create table dw_tmp.l_test2 (id bigint,val string,trans_date string) row
> format delimited fields terminated by ' ' ;
> select * from dw_tmp.l_test1;
> 1 table_1 2016-08-11
> select * from dw_tmp.l_test2;
> 2 table_2 2016-08-11
> -- right like this
> select
> id,
> 'table_1' ,
> trans_date
> from dw_tmp.l_test1
> union all
> select
> id,
> val,
> trans_date
> from dw_tmp.l_test2 ;
> 1 table_1 2016-08-11
> 2 table_2 2016-08-11
> -- incorrect
> select
> id,
> 999,
> 'table_1' ,
> trans_date
> from dw_tmp.l_test1
> union all
> select
> id,
> 999,
> val,
> trans_date
> from dw_tmp.l_test2 ;
> 1 999 table_1 2016-08-11
> 2 999 table_1 2016-08-11 <-- here is wrong
> -- incorrect
> select
> id,
> 999,
> 666,
> 'table_1' ,
> trans_date
> from dw_tmp.l_test1
> union all
> select
> id,
> 999,
> 666,
> val,
> trans_date
> from dw_tmp.l_test2 ;
> 1 999 666 table_1 2016-08-11
> 2 999 666 table_1 2016-08-11 <-- here is wrong
> -- right
> select
> id,
> 999,
> 'table_1' ,
> trans_date,
> '2016-11-11'
> from dw_tmp.l_test1
> union all
> select
> id,
> 999,
> val,
> trans_date,
> trans_date
> from dw_tmp.l_test2 ;
> 1 999 table_1 2016-08-11 2016-11-11
> 2 999 table_2 2016-08-11 2016-08-11
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