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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7853) Reject table function outer joins with predicates in Table API
Date Tue, 17 Oct 2017 21:41:01 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16208449#comment-16208449
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ASF GitHub Bot commented on FLINK-7853:
---------------------------------------

Github user fhueske commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4842#discussion_r145253439
  
    --- Diff: docs/dev/table/tableApi.md ---
    @@ -574,6 +574,7 @@ Table result = orders
           </td>
           <td>
             <p>Joins a table with a the results of a table function. Each row of the
left (outer) table is joined with all rows produced by the corresponding call of the table
function. If a table function call returns an empty result, the corresponding outer row is
preserved and the result padded with null values.
    +        <p><b>Note:</b> Currently the predicates for table function
left outer join can only be empty or literal <code>true</code>.</p>
    --- End diff --
    
    -> `Currently, the predicate of a table function left outer join can only be empty
or literal <code>true</code>.`


> Reject table function outer joins with predicates in Table API
> --------------------------------------------------------------
>
>                 Key: FLINK-7853
>                 URL: https://issues.apache.org/jira/browse/FLINK-7853
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API & SQL
>            Reporter: Xingcan Cui
>            Assignee: Xingcan Cui
>            Priority: Blocker
>             Fix For: 1.4.0
>
>
> Due to CALCITE-2004, the table function outer joins can not be normally executed. We
should cover it up by rejecting join predicates temporarily, until the issue is fixed in Calcite.



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