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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/09/19 02:23:20 UTC

[jira] [Commented] (SPARK-17590) Analyze CTE definitions at once

    [ https://issues.apache.org/jira/browse/SPARK-17590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15502050#comment-15502050 ] 

Apache Spark commented on SPARK-17590:
--------------------------------------

User 'viirya' has created a pull request for this issue:
https://github.com/apache/spark/pull/15146

> Analyze CTE definitions at once
> -------------------------------
>
>                 Key: SPARK-17590
>                 URL: https://issues.apache.org/jira/browse/SPARK-17590
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Liang-Chi Hsieh
>
> 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.



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