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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2015/10/23 21:19:27 UTC

[jira] [Resolved] (CALCITE-400) RelFieldTrimmer needs to handle cross Joins

     [ https://issues.apache.org/jira/browse/CALCITE-400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde resolved CALCITE-400.
---------------------------------
    Resolution: Cannot Reproduce

> RelFieldTrimmer needs to handle cross Joins
> -------------------------------------------
>
>                 Key: CALCITE-400
>                 URL: https://issues.apache.org/jira/browse/CALCITE-400
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Laljo John Pullokkaran
>            Assignee: Laljo John Pullokkaran
>         Attachments: optiq-400.patch
>
>
> select R1.key from R1 Join R2 would result in field trimmer asking for nothing from R2. This is obviously wrong:
> It should either add a constant or get any one field so that cardinality of join is maintained.



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