GitHub user nsyca opened a pull request:
https://github.com/apache/spark/pull/14899
[SPARK-17337][SQL] Incomplete algorithm for name resolution in Catalyst
paser may lead to incorrect result
## What changes were proposed in this pull request?
Create a new alias for each Project operator under a SubqueryAlias
operator. This is to resolve the collision of the column/expression of the same
name referenced in different context of the same
SQL statement. This change aims to resolve an incorrect results problem.
## How was this patch tested?
build/sbt -Phive hive/test
build/sbt sql/test
build/sbt catalyst/test
dev/lint-scala
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/nsyca/spark nullAware
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14899.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 #14899
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commit b98865127a39bde885f9b1680cfe608629d59d51
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-07-29T21:43:56Z
[SPARK-16804][SQL] Correlated subqueries containing LIMIT return incorrect
results
## What changes were proposed in this pull request?
This patch fixes the incorrect results in the rule ResolveSubquery in
Catalyst's Analysis phase.
## How was this patch tested?
./dev/run-tests
a new unit test on the problematic pattern.
commit 069ed8f8e5f14dca7a15701945d42fc27fe82f3c
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-07-29T21:50:02Z
[SPARK-16804][SQL] Correlated subqueries containing LIMIT return incorrect
results
## What changes were proposed in this pull request?
This patch fixes the incorrect results in the rule ResolveSubquery in
Catalyst's Analysis phase.
## How was this patch tested?
./dev/run-tests
a new unit test on the problematic pattern.
commit edca333c081e6d4e53a91b496fba4a3ef4ee89ac
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-07-30T00:28:15Z
New positive test cases
commit 64184fdb77c1a305bb2932e82582da28bb4c0e53
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-01T13:20:09Z
Fix unit test case failure
commit 29f82b05c9e40e7934397257c674b260a8e8a996
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-05T17:42:01Z
blocking TABLESAMPLE
commit ac43ab47907a1ccd6d22f920415fbb4de93d4720
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-05T21:10:19Z
Fixing code styling
commit 631d396031e8bf627eb1f4872a4d3a17c144536c
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-07T18:39:44Z
Correcting Scala test style
commit 7eb9b2dbba3633a1958e38e0019e3ce816300514
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-08T02:31:09Z
One (last) attempt to correct the Scala style tests
commit 1387cf51541408ac20048064fa5e559836af932c
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-12T20:11:50Z
Merge remote-tracking branch 'upstream/master'
commit e8b8a98797c18d04980df46df5bb50617803d4c3
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-15T20:05:30Z
Merge remote-tracking branch 'upstream/master'
commit d011c2879fa6bdf0d12c306a116f0688fc13e8bc
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-29T16:29:09Z
Merge remote-tracking branch 'upstream/master'
commit d9ddddba54d67d5778429d62a61470fa88773608
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-31T13:58:36Z
Merge remote-tracking branch 'upstream/master'
commit d414a78bc9489860ff755e0949dfda9f23bd6f6e
Author: Nattavut Sutyanyong <nsy....@gmail.com>
Date: 2016-08-31T15:24:03Z
Initial batch: code fix and unit test case
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