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From adeneche <...@git.apache.org>
Subject [GitHub] drill pull request: Drill 3536: Initial patch
Date Mon, 10 Aug 2015 20:35:18 GMT
GitHub user adeneche opened a pull request:

    https://github.com/apache/drill/pull/107

    Drill 3536: Initial patch

    Adding support for LEAD, LAG, FIRST_VALUE, LAST_VALUE and NTILE
    
    This is not the final patch
    - I still need to add proper documentation
    - I added a new "aggregate" function named HoldLast, it's sole purpose is to hold a value
between batches (it's being used by first_value/last_value window functions). I may have a
solution that uses an internal batch (like I did for LAG), this should improve the performance
of first_value/last_value functions and remove the need for HoldLast.

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

    $ git pull https://github.com/adeneche/incubator-drill DRILL-3536

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

    https://github.com/apache/drill/pull/107.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 #107
    
----
commit b0cef7617250bc53d7acfc7c893e2c18b9d27374
Author: adeneche <adeneche@gmail.com>
Date:   2015-07-23T23:38:44Z

    restored GenerateTestData

commit aa015a567c6369fa1381b8af7242b1cce73bb635
Author: adeneche <adeneche@gmail.com>
Date:   2015-08-02T16:53:13Z

    DRILL-3553: add support for LEAD and LAG window functions

commit 1df614fbe95c2bb27df7a6a34a8921a06ebe2ba1
Author: adeneche <adeneche@gmail.com>
Date:   2015-08-05T16:27:24Z

    added unit tests for fixed bugs 3604, 3605 and 3606

commit 3556f8584b205a7222618c2288d13f4a2db0e064
Author: adeneche <adeneche@gmail.com>
Date:   2015-08-05T17:47:44Z

    refactoring how window function are being materialized

commit a02df37bf30e57fae59c38abc7f829860bc65403
Author: adeneche <adeneche@gmail.com>
Date:   2015-08-06T17:09:53Z

    DRILL-3536: Add support for FIRST_VALUE and LAST_VALUE window functions

commit 227c0608170556bc934c77aae6f82fbcb99e5ff0
Author: adeneche <adeneche@gmail.com>
Date:   2015-08-10T16:46:38Z

    DRILL-3608: add support for NTILE window function

----


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