[jira] [Updated] (CALCITE-2621) Add rule to execute semi joins with a nested loop algorithm

["Stamatis Zampetakis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-2621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stamatis Zampetakis updated CALCITE-2621:
-----------------------------------------
    Summary: Add rule to execute semi joins with a nested loop algorithm  (was: New rule: SemiJoinToCorrelateRule (SemiJoin => LogicalCorrelate))

> Add rule to execute semi joins with a nested loop algorithm
> -----------------------------------------------------------
>
>                 Key: CALCITE-2621
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2621
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Ruben Quesada Lopez
>            Assignee: Ruben Quesada Lopez
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> Similarly to JoinToCorrelateRule, in some contexts it might be interesting to transform a SemiJoin into a LogicalCorrelate, for this purpose a SemiJoinToCorrelateRule will be needed.
> This feature requires the fix CALCITE-2605, otherwise we would get an exception in EnumerableCorrelate#implement when trying to generate the Expression selector:
> {code}
> Caused by: java.lang.IllegalStateException: Unable to convert SEMI to JoinRelType
> 	at org.apache.calcite.sql.SemiJoinType.toJoinType(SemiJoinType.java:83)
> 	at org.apache.calcite.adapter.enumerable.EnumerableCorrelate.implement(EnumerableCorrelate.java:103)
>         ...
> {code}



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)