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https://issues.apache.org/jira/browse/FLINK-11310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he closed FLINK-11310.
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Resolution: Won't Fix
Currently, the or expressions will be converted to Sarg, and will be put into a
HashSet when code gen. So this issue is invalid now, I will close it.
> Convert predicates to IN or NOT_IN for Project
> ----------------------------------------------
>
> Key: FLINK-11310
> URL: https://issues.apache.org/jira/browse/FLINK-11310
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Reporter: Hequn Cheng
> Priority: Major
> Labels: auto-unassigned, pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> In FLINK-10474, we force translate IN into a predicate to avoid translating
> to a JOIN. In addition, we add a Rule to convert the predicates back to IN so
> that we can generate code using a HashSet for the IN.
> However, FLINK-10474 only takes Filter into consideration. It would be great
> to also convert predicates in Project to IN. It not only will improve the
> performance for the Project, but also will avoid the problem raised in
> FLINK-11308, as all predicates will be converted into one IN expression.
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