[jira] [Commented] (SPARK-33125) Improve the error when Lead and Lag are not allowed to specify window frame

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

    [ https://issues.apache.org/jira/browse/SPARK-33125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17212803#comment-17212803 ] 

Apache Spark commented on SPARK-33125:
--------------------------------------

User 'beliefer' has created a pull request for this issue:
https://github.com/apache/spark/pull/30021

> Improve the error when Lead and Lag are not allowed to specify window frame
> ---------------------------------------------------------------------------
>
>                 Key: SPARK-33125
>                 URL: https://issues.apache.org/jira/browse/SPARK-33125
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: jiaan.geng
>            Priority: Major
>
> Except for Postgresql, other data sources (for example: vertica, oracle, redshift, mysql, presto) are not allowed to specify window frame for the Lead and Lag functions.
> But the current error message is not clear enough.
> {code:java}
> Window Frame $f must match the required frame
> {code}
> The following error message is better.
> {code:java}
> Cannot specify window frame for lead function
> {code}



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