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https://issues.apache.org/jira/browse/HIVE-14431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16640590#comment-16640590
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Hive QA commented on HIVE-14431:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12942570/HIVE-14431.06.patch
{color:red}ERROR:{color} -1 due to build exiting with an error
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/14268/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/14268/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-14268/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Tests exited with: Exception: Patch URL
https://issues.apache.org/jira/secure/attachment/12942570/HIVE-14431.06.patch
was found in seen patch url's cache and a test was probably run already on it.
Aborting...
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12942570 - PreCommit-HIVE-Build
> Recognize COALESCE as CASE
> --------------------------
>
> Key: HIVE-14431
> URL: https://issues.apache.org/jira/browse/HIVE-14431
> Project: Hive
> Issue Type: Improvement
> Components: CBO
> Affects Versions: 2.2.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Attachments: HIVE-14431.01.patch, HIVE-14431.03.patch,
> HIVE-14431.04.patch, HIVE-14431.05.patch, HIVE-14431.05.patch,
> HIVE-14431.06.patch, HIVE-14431.06.patch, HIVE-14431.2.patch, HIVE-14431.patch
>
>
> Transform:
> {code}
> (COALESCE(a, '') = '') OR
> (a = 'A' AND b = c) OR
> (a = 'B' AND b = d) OR
> (a = 'C' AND b = e) OR
> (a = 'D' AND b = f) OR
> (a = 'E' AND b = g) OR
> (a = 'F' AND b = h)
> {code}
> into:
> {code}
> (a='') OR
> (a is null) OR
> (a = 'A' AND b = c) OR
> (a = 'B' AND b = d) OR
> (a = 'C' AND b = e) OR
> (a = 'D' AND b = f) OR
> (a = 'E' AND b = g) OR
> (a = 'F' AND b = h)
> {code}
> With complex queries, this will lead us to factor more predicates that could
> be pushed to the TS.
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