[jira] [Assigned] (SPARK-20175) Exists should not be evaluated in Join operator and can be converted to ScalarSubquery if no correlated reference

2017-04-11 Thread Wenchen Fan (JIRA) 

 [ 
https://issues.apache.org/jira/browse/SPARK-20175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Wenchen Fan reassigned SPARK-20175:
---

Assignee: Liang-Chi Hsieh

> Exists should not be evaluated in Join operator and can be converted to 
> ScalarSubquery if no correlated reference
> -
>
> Key: SPARK-20175
> URL: https://issues.apache.org/jira/browse/SPARK-20175
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 2.1.0
>Reporter: Liang-Chi Hsieh
>Assignee: Liang-Chi Hsieh
> Fix For: 2.2.0
>
>
> Similar to ListQuery, Exists should not be evaluated in Join operator too. 
> Otherwise, a query like following will fail:
> sql("select * from l, r where l.a = r.c + 1 AND (exists (select * from r) OR 
> l.a = r.c)")
> For the Exists subquery without correlated reference, this patch converts it 
> to scalar subquery with a count Aggregate operator.



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[jira] [Assigned] (SPARK-20175) Exists should not be evaluated in Join operator and can be converted to ScalarSubquery if no correlated reference

2017-03-31 Thread Apache Spark (JIRA) 

 [ 
https://issues.apache.org/jira/browse/SPARK-20175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Apache Spark reassigned SPARK-20175:


Assignee: Apache Spark

> Exists should not be evaluated in Join operator and can be converted to 
> ScalarSubquery if no correlated reference
> -
>
> Key: SPARK-20175
> URL: https://issues.apache.org/jira/browse/SPARK-20175
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 2.1.0
>Reporter: Liang-Chi Hsieh
>Assignee: Apache Spark
>
> Similar to ListQuery, Exists should not be evaluated in Join operator too. 
> Otherwise, a query like following will fail:
> sql("select * from l, r where l.a = r.c + 1 AND (exists (select * from r) OR 
> l.a = r.c)")
> For the Exists subquery without correlated reference, this patch converts it 
> to scalar subquery with a count Aggregate operator.



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[jira] [Assigned] (SPARK-20175) Exists should not be evaluated in Join operator and can be converted to ScalarSubquery if no correlated reference

2017-03-31 Thread Apache Spark (JIRA) 

 [ 
https://issues.apache.org/jira/browse/SPARK-20175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Apache Spark reassigned SPARK-20175:


Assignee: (was: Apache Spark)

> Exists should not be evaluated in Join operator and can be converted to 
> ScalarSubquery if no correlated reference
> -
>
> Key: SPARK-20175
> URL: https://issues.apache.org/jira/browse/SPARK-20175
> Project: Spark
>  Issue Type: Improvement
>  Components: SQL
>Affects Versions: 2.1.0
>Reporter: Liang-Chi Hsieh
>
> Similar to ListQuery, Exists should not be evaluated in Join operator too. 
> Otherwise, a query like following will fail:
> sql("select * from l, r where l.a = r.c + 1 AND (exists (select * from r) OR 
> l.a = r.c)")
> For the Exists subquery without correlated reference, this patch converts it 
> to scalar subquery with a count Aggregate operator.



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