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https://issues.apache.org/jira/browse/SPARK-17590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Herman van Hovell resolved SPARK-17590.
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Resolution: Fixed
Assignee: Liang-Chi Hsieh
Fix Version/s: 2.1.0
> Analyze CTE definitions at once and allow CTE subquery to define CTE
> --------------------------------------------------------------------
>
> Key: SPARK-17590
> URL: https://issues.apache.org/jira/browse/SPARK-17590
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Liang-Chi Hsieh
> Assignee: Liang-Chi Hsieh
> Fix For: 2.1.0
>
>
> We substitute logical plan with CTE definitions in the analyzer rule
> CTESubstitution. A CTE definition can be used in the logical plan for
> multiple times, and its analyzed logical plan should be the same. We should
> not analyze CTE definitions multiple times when they are reused in the query.
> By analyzing CTE definitions before substitution, we can support defining CTE
> in subquery.
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