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Posted to issues@flink.apache.org by "Kurt Young (JIRA)" <ji...@apache.org> on 2019/01/30 10:38:00 UTC

[jira] [Closed] (FLINK-7987) Use RexBuilder when converting Expression to RexNode

     [ https://issues.apache.org/jira/browse/FLINK-7987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young closed FLINK-7987.
-----------------------------
    Resolution: Unresolved

> Use RexBuilder when converting Expression to RexNode
> ----------------------------------------------------
>
>                 Key: FLINK-7987
>                 URL: https://issues.apache.org/jira/browse/FLINK-7987
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API &amp; SQL
>            Reporter: Kurt Young
>            Priority: Major
>
> Currently, when converting {{Expression}} to {{RexNode}}, we passed in a {{RelBuilder}}, which is more complex to construct than {{RexBuilder}}. E.g. we need to push a fake table and a fake select node into RelBuilder, in order to get input type information. 
> I think in this case, {{RexBuilder}} will be enough for generating {{RexNode}}.



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