[jira] [Resolved] (CALCITE-968) Support stream joins

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

     [ https://issues.apache.org/jira/browse/CALCITE-968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde resolved CALCITE-968.
---------------------------------
    Resolution: Fixed

Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/e9d50602, with some minor fix-up in http://git-wip-us.apache.org/repos/asf/calcite/commit/937fc461. Thanks for the PR, [~milinda]!

> Support stream joins
> --------------------
>
>                 Key: CALCITE-968
>                 URL: https://issues.apache.org/jira/browse/CALCITE-968
>             Project: Calcite
>          Issue Type: New Feature
>          Components: core, stream
>            Reporter: Milinda Lakmal Pathirage
>            Assignee: Julian Hyde
>         Attachments: CALCITE-968-0.patch
>
>
> Stream joins are used to relate information from different streams or stream and relation combinations. Calcite lacks (proper) support for stream-to-relation joins and stream-to-stream joins.
> stream-to-relation join like below fails at the SQL validation stage.
> select stream orders.orderId, orders.productId, products.name from orders join products on orders.productId = products.id
> But if 'products' is a stream, the query is valid according to Calcite, even though the stream-to-stream join in above query is not valid due to unbounded nature of streams.



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