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https://issues.apache.org/jira/browse/SPARK-13544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li updated SPARK-13544:
----------------------------
    Description: After plan analysis by Analyzer, two operators could have 
alias. They are Project and Aggregate. So far, only Alias defined in Project 
will rewrite and propagate constraints.  (was: After plan analysis by Analyzer, 
three operators could have alias. They are Project, Aggregate and Window. So 
far, only Alias defined in Project will rewrite and propagate constraints.)

> Rewrite/Propagate constraints for Aliases in Aggregate
> ------------------------------------------------------
>
>                 Key: SPARK-13544
>                 URL: https://issues.apache.org/jira/browse/SPARK-13544
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.0.0
>            Reporter: Xiao Li
>
> After plan analysis by Analyzer, two operators could have alias. They are 
> Project and Aggregate. So far, only Alias defined in Project will rewrite and 
> propagate constraints.



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