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From "Jark Wu (Jira)" <j...@apache.org>
Subject [jira] [Created] (FLINK-14716) Cooperate computed column with project push down
Date Tue, 12 Nov 2019 08:32:00 GMT
Jark Wu created FLINK-14716:

             Summary: Cooperate computed column with project push down
                 Key: FLINK-14716
                 URL: https://issues.apache.org/jira/browse/FLINK-14716
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Planner
            Reporter: Jark Wu

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

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