[GitHub] spark pull request #18772: [SPARK-20963][SQL] Support column aliases for joi...

[asfgit]

Github user asfgit closed the pull request at:

https://github.com/apache/spark/pull/18772


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[GitHub] spark pull request #18772: [SPARK-20963][SQL] Support column aliases for joi...

[maropu]

GitHub user maropu opened a pull request:

https://github.com/apache/spark/pull/18772

[SPARK-20963][SQL] Support column aliases for join relations in FROM clause

## What changes were proposed in this pull request?
This pr added parsing rules to support column aliases for join relations in 
FROM clause.
This pr is a sub-task of #18079.

## How was this patch tested?
Added tests in `AnalysisSuite`, `PlanParserSuite,` and `SQLQueryTestSuite`.

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

$ git pull https://github.com/maropu/spark SPARK-20963-2

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

https://github.com/apache/spark/pull/18772.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 #18772


commit 6c93f859b7ef2cc7f7cb49ab6fbd0397b43fda84
Author: Takeshi Yamamuro 
Date:   2017-07-24T09:08:11Z

Support aliases for join relations




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