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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2019/05/29 20:09:00 UTC
[jira] [Resolved] (CALCITE-3096) In RelBuilder, make alias method
idempotent
[ https://issues.apache.org/jira/browse/CALCITE-3096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Julian Hyde resolved CALCITE-3096.
----------------------------------
Resolution: Fixed
Fixed in https://github.com/apache/calcite/commit/aabcb2e5d1df0201fc8b5f3d99f9317bde6d49ae.
> In RelBuilder, make alias method idempotent
> -------------------------------------------
>
> Key: CALCITE-3096
> URL: https://issues.apache.org/jira/browse/CALCITE-3096
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Priority: Major
> Fix For: 1.20.0
>
>
> In {{RelBuilder}}, make the {{alias}} method idempotent. If an expression's alias is already 'foo', then calling {{alias(e, "foo")}} will return the expression unchanged.
> The intent of this change is to reduce the number of {{if}} statements that are required in client code that is trying to produce a concise {{RelNode}} tree.
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