GitHub user vkorukanti opened a pull request:
https://github.com/apache/drill/pull/462
DRILL-4539: Add support for Null Equality Joins
@amansinha100 @jacques-n Could you please review the patches?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vkorukanti/drill null_rewrite
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/462.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 #462
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commit 3a1db78e24fe0b956659365a1267d9aee79a2955
Author: vkorukanti <[email protected]>
Date: 2016-04-01T23:44:24Z
DRILL-4539 (part 1): Use custom convertlet table for IS [NOT] DISTINCT FROM
functions
Test changes:
+ Add join (hash and merge) tests that have IS NOT DISTINCT FROM in the
join condition
+ Refactor/fix tests in TestJoinNullable class to reset options properly at
the end of the test.
commit d9a149007e58c4219b7d0d1d9647558e27a401b8
Author: vkorukanti <[email protected]>
Date: 2016-04-04T23:25:10Z
DRILL-4539 (part 2): Implement IS_DISTINCT_FROM and IS_NOT_DISTINCT_FROM
functions
commit af40ee7095d02ec10bf500c24f04433e02ccb007
Author: vkorukanti <[email protected]>
Date: 2016-04-05T18:19:07Z
DRILL-4539 (part 3): Rewrite null equal join condition as IS NOT DISTINCT
FROM
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