Hong Shen created CALCITE-3287:
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Summary: Union's getRowCount in RelMdRowCount has not concern
'union all'
Key: CALCITE-3287
URL: https://issues.apache.org/jira/browse/CALCITE-3287
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Hong Shen
when I read the RelMdRowCount.java, I found that union's getRowCount has not
concern 'union all', while in Union.estimateRowCount has. can any body tell me
why？
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