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From Terranlee <...@git.apache.org>
Subject [GitHub] incubator-quickstep pull request #229: Implement parser and resolver for UNI...
Date Thu, 06 Apr 2017 22:50:12 GMT
GitHub user Terranlee opened a pull request:

    https://github.com/apache/incubator-quickstep/pull/229

    Implement parser and resolver for UNION and INTERSECT operators

    This pull request implements the parser and resolver parts of set operations (`UNION`
and `INTERSECT`).
    
    It also supports composite set operations, e.g.
    ```
    SELECT * FROM a
    UNION ALL
    SELECT * FROM b
    UNION ALL
    SELECT * FROM c
    INTERSECT
    SELECT * FROM d;
    ``` 
    
    Note: will add parser and resolver tests, so do not merge yet.

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

    $ git pull https://github.com/Terranlee/incubator-quickstep union-operator-parser

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

    https://github.com/apache/incubator-quickstep/pull/229.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 #229
    
----
commit ddce20354ab70df1bda53d65f6e2266f50bc5e44
Author: TianrunLi <tli278@wisc.edu>
Date:   2016-12-20T15:23:24Z

    Implement parser and resolver for UNION and INTERSECT.

----


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