[jira] [Commented] (HIVE-9644) Fold case when udfs

2015-05-07 Thread Ashutosh Chauhan (JIRA) 

[ 
https://issues.apache.org/jira/browse/HIVE-9644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14533161#comment-14533161
 ] 

Ashutosh Chauhan commented on HIVE-9644:


Created HIVE-10645 for stats annotator issue.

 Fold case  when udfs
 -

 Key: HIVE-9644
 URL: https://issues.apache.org/jira/browse/HIVE-9644
 Project: Hive
  Issue Type: Bug
  Components: Logical Optimizer
Affects Versions: 0.14.0, 1.0.0, 1.1.0
Reporter: Gopal V
Assignee: Ashutosh Chauhan
 Fix For: 1.2.0

 Attachments: HIVE-9644.1.patch, HIVE-9644.2.patch, HIVE-9644.3.patch, 
 HIVE-9644.patch


 Constant folding for queries don't kick in for some automatically generated 
 query patterns which look like this.
 {code}
 hive explain select count(1) from store_sales where (case ss_sold_date when 
 '1998-01-01' then 1 else null end)=1;
 {code}
 This should get rewritten by pushing the equality into the case branches.
 {code}
 select count(1) from store_sales where (case ss_sold_date when '1998-01-01' 
 then 1=1 else null=1 end);
 {code}
 Ending up with a simplified filter condition, resolving itself as 
 {code}
 select count(1) from store_sales where ss_sold_date= '1998-01-01' ;
 {code}



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[jira] [Commented] (HIVE-9644) Fold case when udfs

2015-05-06 Thread Ashutosh Chauhan (JIRA) 

[ 
https://issues.apache.org/jira/browse/HIVE-9644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14531543#comment-14531543
 ] 

Ashutosh Chauhan commented on HIVE-9644:


Created HIVE-10636 as follow-up

 Fold case  when udfs
 -

 Key: HIVE-9644
 URL: https://issues.apache.org/jira/browse/HIVE-9644
 Project: Hive
  Issue Type: Bug
  Components: Logical Optimizer
Affects Versions: 0.14.0, 1.0.0, 1.1.0
Reporter: Gopal V
Assignee: Ashutosh Chauhan
 Attachments: HIVE-9644.1.patch, HIVE-9644.2.patch, HIVE-9644.3.patch, 
 HIVE-9644.patch


 Constant folding for queries don't kick in for some automatically generated 
 query patterns which look like this.
 {code}
 hive explain select count(1) from store_sales where (case ss_sold_date when 
 '1998-01-01' then 1 else null end)=1;
 {code}
 This should get rewritten by pushing the equality into the case branches.
 {code}
 select count(1) from store_sales where (case ss_sold_date when '1998-01-01' 
 then 1=1 else null=1 end);
 {code}
 Ending up with a simplified filter condition, resolving itself as 
 {code}
 select count(1) from store_sales where ss_sold_date= '1998-01-01' ;
 {code}



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