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From "Jark Wu (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (FLINK-12269) Support Temporal Table Join in blink planner
Date Sat, 20 Apr 2019 03:24:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-12269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jark Wu reassigned FLINK-12269:
-------------------------------

    Assignee: Jark Wu

> Support Temporal Table Join in blink planner
> --------------------------------------------
>
>                 Key: FLINK-12269
>                 URL: https://issues.apache.org/jira/browse/FLINK-12269
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / Planner
>            Reporter: Jark Wu
>            Assignee: Jark Wu
>            Priority: Major
>
> Support translate following "FOR SYSTEM_TIME AS OF" query into {{StreamExecTemporalTableJoin}}.
> {code:sql}
> SELECT
>   o.amout, o.currency, r.rate, o.amount * r.rate
> FROM
>   Orders AS o
>   JOIN LatestRates FOR SYSTEM_TIME AS OF o.proctime AS r
>   ON r.currency = o.currency
> {code}
> This is an extension to current temporal join (FLINK-9738) using a standard syntax introduced
in Calcite 1.19.



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