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https://issues.apache.org/jira/browse/SPARK-20456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997720#comment-15997720
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Apache Spark commented on SPARK-20456:
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User 'map222' has created a pull request for this issue:
https://github.com/apache/spark/pull/17865
> Add examples for functions collection for pyspark
> -------------------------------------------------
>
> Key: SPARK-20456
> URL: https://issues.apache.org/jira/browse/SPARK-20456
> Project: Spark
> Issue Type: Documentation
> Components: Documentation, PySpark
> Affects Versions: 2.1.0
> Reporter: Michael Patterson
> Priority: Minor
>
> Document sql.functions.py:
> 1. Add examples for the common string functions (upper, lower, and reverse)
> 2. Rename columns in datetime examples to be more informative (e.g. from 'd'
> to 'date')
> 3. Add examples for unix_timestamp, from_unixtime, rand, randn, collect_list,
> collect_set, lit,
> 4. Add note to all trigonometry functions that units are radians.
> 5. Add links between functions, (e.g. add link to radians from toRadians)
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