[jira] [Assigned] (HIVE-20712) HivePointLookupOptimizer should extract deep cases

["Zoltan Haindrich (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-20712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich reassigned HIVE-20712:
---------------------------------------


> HivePointLookupOptimizer should extract deep cases
> --------------------------------------------------
>
>                 Key: HIVE-20712
>                 URL: https://issues.apache.org/jira/browse/HIVE-20712
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>
> currently IN extraction stops at the first level; as a result for the following query, the nested INs are not closed back.
> {code}
> create table t(a integer);
> create table t2(b integer);
> insert into t values (1),(2),(3),(4);
> insert into t2 values (1),(2),(3),(4);
> explain
> select * from t,t2 where
> 	a*a=b+3
> 	and
> 	a in (1,2,3,4)
> 	and
> 	b in (1,2,3,4)
> 	and (
> 		(a in (1,2) and b in (1,2) ) or 
> 		(a in (2,3) and b in (2,3) )
> 			)
> 	;
> {code}



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