[jira] [Resolved] (SPARK-18801) Support resolve a nested view

["Herman van Hovell (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-18801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Herman van Hovell resolved SPARK-18801.
---------------------------------------
    Resolution: Fixed
      Assignee: Jiang Xingbo

> Support resolve a nested view
> -----------------------------
>
>                 Key: SPARK-18801
>                 URL: https://issues.apache.org/jira/browse/SPARK-18801
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Jiang Xingbo
>            Assignee: Jiang Xingbo
>
> We should be able to resolve a nested view. The main advantage is that if you update an underlying view, the current view also gets updated.
> The new approach should be compatible with older versions of SPARK/HIVE, that means:
> 	1. The new approach should be able to resolve the views that created by older versions of SPARK/HIVE;
> 	2. The new approach should be able to resolve the views that are currently supported by SPARK SQL.
> The new approach mainly brings in the following changes:
> 	1. Add a new operator called `View` to keep track of the CatalogTable that describes the view, and the output attributes as well as the child of the view;
> 	2. Update the `ResolveRelations` rule to resolve the relations and views, note that a nested view should be resolved correctly;
> 	3. Add `AnalysisContext` to enable us to still support a view created with CTE/Windows query.



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