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https://issues.apache.org/jira/browse/SPARK-9221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-9221.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 2.3.0

Issue resolved by pull request 18814
[https://github.com/apache/spark/pull/18814]

> Support IntervalType in Range Frame
> -----------------------------------
>
>                 Key: SPARK-9221
>                 URL: https://issues.apache.org/jira/browse/SPARK-9221
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Herman van Hovell
>             Fix For: 2.3.0
>
>
> Support the IntervalType in window range frames, as mentioned in the 
> conclusion of the databricks  blog 
> [post|https://databricks.com/blog/2015/07/15/introducing-window-functions-in-spark-sql.html]
>  on window functions.
> This actualy requires us to support Literals instead of Integer constants in 
> Range Frames. The following things will have to be modified:
> * org.apache.spark.sql.hive.HiveQl
> * org.apache.spark.sql.catalyst.expressions.SpecifiedWindowFrame
> * org.apache.spark.sql.execution.Window
> * org.apache.spark.sql.expressions.Window



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