GitHub user Terranlee opened a pull request:
https://github.com/apache/incubator-quickstep/pull/231
Implement optimizer and execution layers for UNION and INTERSECT.
This PR implements the logical and physical layers to support UNION and
INTERSECT operations, and also creates a new UnionAllOperator to do UnionAll
operation.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Terranlee/incubator-quickstep
union-operator-execute
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/231.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 #231
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commit 6ff6c34b700eaf84643954914a8344e5b440ec41
Author: Tianrun <tian...@node-0.tianrun-qv23700.quickstep-pg0.wisc.cloudlab.us>
Date: 2017-04-10T16:21:11Z
Implement optimizer and execution layers for UNION and INTERSECT.
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