[jira] [Created] (FLINK-12856) Introduce planner rule to push projection into ProjectableTableSource

[godfrey he (JIRA)]

godfrey he created FLINK-12856:
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             Summary: Introduce planner rule to push projection into 
ProjectableTableSource
                 Key: FLINK-12856
                 URL: https://issues.apache.org/jira/browse/FLINK-12856
             Project: Flink
          Issue Type: New Feature
          Components: Table SQL / Planner
            Reporter: godfrey he
            Assignee: godfrey he


This issue aims support push projection into ProjectableTableSource to reduce 
output fields of a TableSource



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