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From "Jark Wu (Jira)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-14716) Cooperate computed column with project push down
Date Tue, 12 Nov 2019 08:34:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-14716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jark Wu updated FLINK-14716:
----------------------------
        Parent: FLINK-14386
    Issue Type: Sub-task  (was: Bug)

> Cooperate computed column with project push down
> ------------------------------------------------
>
>                 Key: FLINK-14716
>                 URL: https://issues.apache.org/jira/browse/FLINK-14716
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Planner
>            Reporter: Jark Wu
>            Priority: Major
>
> In FLINK-14665, we supported computed column in planner. However, the implementation
of {{TableSourceTable#getRowType}} will include computed columns which is possibly not right,
because computed column is generated in the downstream Project, not in the source scan. 
> This is possibly lead to errors when push project into source scan which will call {{TableSourceTable#getRowType}}
in the rule. Currently, all the tests are passed because we don't have a test to cover this,
i.e. computed column on a projectable TableSource. We should at least add a test to cover
this. 



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