GitHub user map222 opened a pull request:
https://github.com/apache/spark/pull/17865
[SPARK-20456][Docs] Add examples for functions collection for pyspark
## What changes were proposed in this pull request?
This adds documentation to many functions in pyspark.sql.functions.py:
`upper`, `lower`, `reverse`, `unix_timestamp`, `from_unixtime`, `rand`,
`randn`, `collect_list`, `collect_set`, `lit`
Add units to the trigonometry functions.
Renames columns in datetime examples to be more informative.
Adds links between some functions.
## How was this patch tested?
`./dev/lint-python`
`python python/pyspark/sql/functions.py`
`./python/run-tests.py --module pyspark-sql`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/map222/spark spark-20456
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17865.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #17865
----
commit 91515c620287e193c6d208038025fe194740e4d2
Author: Michael Patterson <[email protected]>
Date: 2017-05-05T00:26:56Z
First revision: trigonometry units, lit, collect_set, collect_list,
unix_timestamp, from_unixtime
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