GitHub user felixcheung opened a pull request:
https://github.com/apache/spark/pull/8503
[SPARK-9803] [SPARKR] Add subset and transform + tests
Add subset and transform
Also reorganize `[` & `[[` to subset instead of select
Note: for transform, transform is very similar to mutate. Spark doesn't
seem to replace existing column with the name in mutate (ie. `mutate(df, age =
df$age + 2)` - returned DataFrame has 2 columns with the same name 'age'), so
therefore not doing that for now in transform.
Though it is clearly stated it should replace column with matching name
(should I open a JIRA for mutate/transform?)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/felixcheung/spark rsubset_transform
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8503.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 #8503
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commit 17472b9115a67fedf04237c6a4c66575ce4c39d3
Author: felixcheung <[email protected]>
Date: 2015-08-28T09:20:52Z
Add subset and transform + tests
Move [ & [[ to subset instead of select
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