GitHub user hsyuan opened a pull request:
https://github.com/apache/incubator-hawq/pull/795
HAWQ-860. Fix ORCA wrong plan when correlated subquery contains
set-returning functions
ORCA 1.633 returns wrong result for the following query:
```sql
select 0 is distinct from (select count(1) from (select unnest(array[1, 2,
3])) as foo);
?column?
----------
t
t
t
(3 rows)
```
Correct result should be:
```sql
?column?
----------
t
(1 row)
```
This bug was fixed by bumping ORCA version to 1.634.
For detail information, see ORCA pull request:
https://github.com/greenplum-db/gporca/pull/49
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hsyuan/incubator-hawq HAWQ-860
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-hawq/pull/795.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #795
----
commit eef9fe3c330119bdeaecc8f5b18382d1b9568e46
Author: Haisheng Yuan and Omer Arap <[email protected]>
Date: 2016-07-14T19:16:40Z
Fix ORCA wrong plan when correlated subquery contains set-returning
functions
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
