[jira] [Commented] (SPARK-4762) Add support for tuples in 'where in' clause query

["Yash Datta (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14235280#comment-14235280 ] 

Yash Datta commented on SPARK-4762:
-----------------------------------

Already created a PR for the hive parser

> Add support for tuples in 'where in' clause query
> -------------------------------------------------
>
>                 Key: SPARK-4762
>                 URL: https://issues.apache.org/jira/browse/SPARK-4762
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.1.0
>            Reporter: Yash Datta
>             Fix For: 1.3.0
>
>
> Currently, in the where in clause the filter is applied only on a single column. We can enhance it to accept filter on multiple columns.
> So current support is for queries like :
> Select * from table where c1 in (value1,value2,...value n);
> Need to add support for queries like :
> Select * from table where (c1,c2,... cn) in ((value1,value2...value n), (value1' , value2' ... ,value n').... )
> Also, we can add optimized version of where in clause of tuples , where we create a hashset of the filter tuples for matching rows.
> This also requires a change in the hive parser since currently there is no support for multiple columns in IN clause.



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