GitHub user ueshin opened a pull request:
https://github.com/apache/spark/pull/1451
[SPARK-2535][SQL] Add StringComparison case to NullPropagation.
`StringComparison` expressions including `null` literal cases could be
added to `NullPropagation`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ueshin/apache-spark issues/SPARK-2535
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1451.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 #1451
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commit 8f9b98439b6e3bf674ae22a6a6a716e27da509f2
Author: Takuya UESHIN <ues...@happy-camper.st>
Date: 2014-07-15T09:08:13Z
Add StringComparison case to NullPropagation.
commit e99c237f661589792cde6451466d2c44e783cd82
Author: Takuya UESHIN <ues...@happy-camper.st>
Date: 2014-07-16T10:59:58Z
Add some tests.
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