GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/17935
[SPARK-20690][SQL][WIP] Analyzer shouldn't add missing attributes through
subqueries
## What changes were proposed in this pull request?
We add missing attributes into Filter in Analyzer. But we shouldn't do it
through subqueries like this:
select 1 from (select 1 from onerow t1 LIMIT 1) where t1.c1=1
This query works in current codebase. However, the outside where clause
shouldn't be able to refer `t1.c1` attribute.
## How was this patch tested?
Jenkins tests.
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 SPARK-20690
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17935.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 #17935
----
commit bb16061f2c595567fcd5fba6b91865d92471d42e
Author: Liang-Chi Hsieh <[email protected]>
Date: 2017-05-10T08:25:40Z
Analyzer shouldn't add missing attributes through subqueries.
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