[jira] [Commented] (SPARK-16983) Add `prettyName` to row_number, dense_rank, percent_rank, cume_dist

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-16983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15414398#comment-15414398 ] 

Apache Spark commented on SPARK-16983:
--------------------------------------

User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/14571

> Add `prettyName` to row_number, dense_rank, percent_rank, cume_dist
> -------------------------------------------------------------------
>
>                 Key: SPARK-16983
>                 URL: https://issues.apache.org/jira/browse/SPARK-16983
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Dongjoon Hyun
>            Priority: Minor
>
> Currently, two-word window functions like `row_number`, `dense_rank`, `percent_rank`, and `cume_dist` are expressed without `_` in error messages. We had better show the correct names.
> **Before**
> {code}
> scala> sql("select row_number()").show
> java.lang.UnsupportedOperationException: Cannot evaluate expression: rownumber()
> {code}
> **After**
> {code}
> scala> sql("select row_number()").show
> java.lang.UnsupportedOperationException: Cannot evaluate expression: row_number()
> {code}



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