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https://issues.apache.org/jira/browse/HIVE-13235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aihua Xu updated HIVE-13235:
----------------------------
Attachment: HIVE-13235.1.patch
> Insert from select generates incorrect result when
> hive.optimize.constant.propagation is on
> -------------------------------------------------------------------------------------------
>
> Key: HIVE-13235
> URL: https://issues.apache.org/jira/browse/HIVE-13235
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.0.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Attachments: HIVE-13235.1.patch
>
>
> The following query returns incorrect result when constant optimization is
> turned on. The subquery happens to have an alias p1 to be the same as the
> input partition name. Constant optimizer will optimize it incorrectly as the
> constant.
> When constant optimizer is turned off, we will get the correct result.
> {noformat}
> set hive.cbo.enable=false;
> set hive.optimize.constant.propagation = true;
> create table t1(c1 string, c2 double) partitioned by (p1 string, p2 string);
> create table t2(p1 double, c2 string);
> insert into table t1 partition(p1='40', p2='p2') values('c1', 0.0);
> INSERT OVERWRITE TABLE t2 select if((c2 = 0.0), c2, '0') as p1, 2 as p2 from
> t1 where c1 = 'c1' and p1 = '40';
> select * from t2;
> 40 2
> {noformat}
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