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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2016/05/11 13:32:12 UTC
[jira] [Assigned] (HIVE-13733) CTE + "IS NULL" predicate + column
aliasing as existing column leads to wrong results
[ https://issues.apache.org/jira/browse/HIVE-13733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jesus Camacho Rodriguez reassigned HIVE-13733:
----------------------------------------------
Assignee: Jesus Camacho Rodriguez
> CTE + "IS NULL" predicate + column aliasing as existing column leads to wrong results
> --------------------------------------------------------------------------------------
>
> Key: HIVE-13733
> URL: https://issues.apache.org/jira/browse/HIVE-13733
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.1.0
> Reporter: Dudu Markovitz
> Assignee: Jesus Camacho Rodriguez
>
> hive> create table t (i int,a string,b string);
> hive> insert into t values (1,'hello','world'),(2,'bye',null);
> hive> select * from t where t.b is null;
> 2 bye NULL
> This is wrong, all 3 columns should return the same value - t.a.
> hive> with cte as (select t.a as a,t.a as b,t.a as c from t where t.b is null) select * from cte;
> bye NULL bye
> However, these are right:
> hive> select t.a as a,t.a as b,t.a as c from t where t.b is null;
> bye bye bye
> hive> with cte as (select t.a as a,t.a as b,t.a as c from t where t.b is not null) select * from cte;OK
> hello hello hello
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