[
https://issues.apache.org/jira/browse/HIVE-3343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13430757#comment-13430757
]
Gang Tim Liu commented on HIVE-3343:
------------------------------------
If we remove "b.k1 < 5", it will generate right result.
"explain extended" shows Select Operator has different order of columns (_col0,
_col3, _col4, _col2) from filter operator's (_col0,_col2,_col3,_col4). Here is
snapshot:
Reduce Operator Tree:
Group By Operator
...
outputColumnNames: _col0, _col1
Select Operator
...
outputColumnNames: _col0, _col3, _col4, _col2
Filter Operator
...
predicate:
expr: (_col2 < 5.0)
type: boolean
File Output Operator
...
table:
...
properties:
columns _col0,_col2,_col3,_col4
columns.types string,double,double,double
escape.delim \
...
> Hive: Query misaligned result for Group by followed by Join with filter and
> skip a group-by result
> --------------------------------------------------------------------------------------------------
>
> Key: HIVE-3343
> URL: https://issues.apache.org/jira/browse/HIVE-3343
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Gang Tim Liu
> Assignee: Gang Tim Liu
>
> This simple Hive query would generate wrong result:
> select a.key, b.k2, b.k3
> from src a
> join (
> select key,
> min(key) as k,
> min(key)+1 as k1,
> min(key)+2 as k2,
> min(key)+3 as k3
> from src
> group by key
> ) b
> on a.key=b.key and b.k1 < 5;
> 0 3.0 1.0
> 0 3.0 1.0
> 0 3.0 1.0
> 2 5.0 3.0
> The right result is:
> 0 2.0 3.0
> 0 2.0 3.0
> 0 2.0 3.0
> 2 4.0 5.0
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
