[jira] [Updated] (SPARK-20456) Document major aggregation functions for pyspark

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-20456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon updated SPARK-20456:
---------------------------------
    Priority: Minor  (was: Major)

> Document major aggregation functions for pyspark
> ------------------------------------------------
>
>                 Key: SPARK-20456
>                 URL: https://issues.apache.org/jira/browse/SPARK-20456
>             Project: Spark
>          Issue Type: Documentation
>          Components: Documentation
>    Affects Versions: 2.1.0
>            Reporter: Michael Patterson
>            Priority: Minor
>
> Document `sql.functions.py`:
> 1. Document the common aggregate functions (`min`, `max`, `mean`, `count`, `collect_set`, `collect_list`, `stddev`, `variance`)
> 2. Rename columns in datetime examples.
> 3. Add examples for `unix_timestamp` and `from_unixtime`
> 4. Add note to all trigonometry functions that units are radians.
> 5. Document `lit`



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