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Posted to issues@flink.apache.org by "Hequn Cheng (JIRA)" <ji...@apache.org> on 2018/11/21 14:06:00 UTC

[jira] [Assigned] (FLINK-7403) Remove expandLocalRef() before code generation

     [ https://issues.apache.org/jira/browse/FLINK-7403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hequn Cheng reassigned FLINK-7403:
----------------------------------

    Assignee: Hequn Cheng

> Remove expandLocalRef() before code generation
> ----------------------------------------------
>
>                 Key: FLINK-7403
>                 URL: https://issues.apache.org/jira/browse/FLINK-7403
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API &amp; SQL
>            Reporter: Timo Walther
>            Assignee: Hequn Cheng
>            Priority: Major
>
> Currently, we expand local references before code generation. This means that expressions that actually only need to be evaluated once, might be evaluated multiple times. We should remove the expand step where possible.



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