GitHub user chenghao-intel opened a pull request:
https://github.com/apache/spark/pull/4812
[SPARK-4226] [SQL] Add Exists support for where clause
Rewrite the `[NOT] EXISTS` clause as `left semi join`. Still we need to add
the `[NOT] IN` support.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chenghao-intel/spark exists
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/4812.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 #4812
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commit 3d6934c80c5fe33a51bfc3682c758c600a77ff14
Author: Cheng Hao <[email protected]>
Date: 2015-02-27T08:41:52Z
Add Exists support for where clause
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