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https://issues.apache.org/jira/browse/FLINK-9997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kurt Young closed FLINK-9997.
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Resolution: Unresolved
> Improve Expression Reduce
> -------------------------
>
> Key: FLINK-9997
> URL: https://issues.apache.org/jira/browse/FLINK-9997
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Ruidong Li
> Assignee: Ruidong Li
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> There's no Calc node at normalize plans, so ReduceExpressionRule.CALC does
> not match any thing.
> If adding calc-related rules to normalize phase, then project-related rules
> and filter-related rules do not match any thing at logical opt phase. If
> adding ReduceExpressionRule.CALC to logical opt phase, it will increase the
> the search time. Therefore, adding a new phase after logical opt may be an
> option.
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