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Posted to issues@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2019/11/20 07:14:00 UTC
[jira] [Assigned] (FLINK-14716) Cooperate computed column with push
down rules
[ https://issues.apache.org/jira/browse/FLINK-14716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jark Wu reassigned FLINK-14716:
-------------------------------
Assignee: Danny Chen
> Cooperate computed column with push down rules
> ----------------------------------------------
>
> 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
> Assignee: Danny Chen
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> 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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