GitHub user bryanjj opened a pull request:
https://github.com/apache/spark/pull/6141
[SPARK-6380] Resolution of equi-join key in post-join projection
create a new method in LogicalPlan for resolving ambiguous references and
wrote an implentation for Project.
handles cases like: df1.join(df2, df1("key") === df2("key")).select("key")
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bryanjj/spark spark-6380-equi-join-key
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6141.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 #6141
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commit 09131bda73dcfc4b17b201aa4a788a4bce2d3c60
Author: Bryan Jacobs <[email protected]>
Date: 2015-05-14T07:15:09Z
[SPARK-6380] Resolution of equi-join key in post-join projection
create a new method in LogicalPlan for resolving ambiguous references and
wrote an implentation for Project.
handles cases like: df1.join(df2, df1("key") === df2("key")).select("key")
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