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From zuyu <...@git.apache.org>
Subject [GitHub] incubator-quickstep pull request #342: DO NOT MERGE: Quickstep-119: Added th...
Date Sun, 22 Apr 2018 04:56:52 GMT
GitHub user zuyu opened a pull request:

    https://github.com/apache/incubator-quickstep/pull/342

    DO NOT MERGE: Quickstep-119: Added the rule that eliminates a HashJoin to a Selection
if possible.

    This PR adds an optimization rule that eliminates a join if at least one side is empty.
    
    TODO: add unit tests.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/zuyu/incubator-quickstep simplify-join-rule

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-quickstep/pull/342.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 #342
    
----
commit c670a5bec9374f9c613461114c234eeea25f2de1
Author: Zuyu Zhang <zuyu@...>
Date:   2018-04-18T22:15:34Z

    Added the rule that eliminates a HashJoin to a Selection if possible.

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