GitHub user ptkool opened a pull request:
https://github.com/apache/spark/pull/17650
[SPARK-20350] Add optimization rules to apply Complementation Laws.
## What changes were proposed in this pull request?
Apply Complementation Laws during boolean expression simplification.
## How was this patch tested?
Tested using unit tests, integration tests, and manual tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ptkool/spark apply_complementation_laws
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17650.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 #17650
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commit 1abf69155db9f44380d1726ed5c9b0d7a3b48d1d
Author: ptkool <[email protected]>
Date: 2017-04-16T12:33:59Z
Add optimization rules to apply Complementation Laws.
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