GitHub user wuchong opened a pull request:
https://github.com/apache/flink/pull/2159
[FLINK-3942] [tableAPI] Add support for INTERSECT
Internally, I translate INTERSECT into a Join on all fields and then a
distinct for removing duplicate records.
As Calcite SQL Parser doesn't support `INTERSECT ALL` , so I didn't add
`intersectAll()` function to `Table`.
I can add the corresponding documents if needed.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wuchong/flink INTERSECT
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2159.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 #2159
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commit a666a3aabb01090eb3c6205b28e54a0dbb2e8a05
Author: Jark Wu <wuchong...@alibaba-inc.com>
Date: 2016-06-24T11:57:09Z
[FLINK-3942] [tableAPI] Add support for INTERSECT
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