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Posted to issues@spark.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2015/10/28 11:47:27 UTC
[jira] [Updated] (SPARK-11371) Make "mean" an alias for "avg"
operator
[ https://issues.apache.org/jira/browse/SPARK-11371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu updated SPARK-11371:
---------------------------
Attachment: spark-11371-v1.patch
> Make "mean" an alias for "avg" operator
> ---------------------------------------
>
> Key: SPARK-11371
> URL: https://issues.apache.org/jira/browse/SPARK-11371
> Project: Spark
> Issue Type: Improvement
> Reporter: Ted Yu
> Priority: Minor
> Attachments: spark-11371-v1.patch
>
>
> From Reynold in the thread 'Exception when using some aggregate operators' (http://search-hadoop.com/m/q3RTt0xFr22nXB4/):
> I don't think these are bugs. The SQL standard for average is "avg", not "mean". Similarly, a distinct count is supposed to be written as "count(distinct col)", not "countDistinct(col)".
> We can, however, make "mean" an alias for "avg" to improve compatibility between DataFrame and SQL.
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