[jira] [Commented] (CALCITE-451) Implement theta join, inner and outer, in enumerable convention

["Julian Hyde (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14194048#comment-14194048 ] 

Julian Hyde commented on CALCITE-451:
-------------------------------------

Work in progress in https://github.com/julianhyde/incubator-calcite/tree/calcite-451. Will probably commit after package reorg CALCITE-296 is complete.

> Implement theta join, inner and outer, in enumerable convention
> ---------------------------------------------------------------
>
>                 Key: CALCITE-451
>                 URL: https://issues.apache.org/jira/browse/CALCITE-451
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Assignee: Julian Hyde
>
> Implement theta join in enumerable convention. It must handle not just equi-, or equi-plus-theta (see CALCITE-371) but any join condition. It must also handle inner and all types of outer join.
> Performance may not be that good. Other join algorithms (e.g. hash join,  nested loops doing range scans into a sorted map, or merge joins) can offer better alternatives for particular operators (e.g. {{BETWEEN}}).



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