GitHub user peter-toth opened a pull request:
https://github.com/apache/spark/pull/22817
[SPARK-25816][SQL] ResolveReferences should work bottom-up manner on
expressions
## What changes were proposed in this pull request?
ResolveReferences works top-down manner when resolving the expression tree,
this PR changes the resolution order to bottom-up and so solves some issues.
This PR also replaces the `resolve` method to the more general
`transformExpressionsUp`.
## How was this patch tested?
added UT
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/peter-toth/spark SPARK-25816
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22817.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 #22817
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commit f62725f5378f365c58b4b01f2a078e5e93176cda
Author: Peter Toth <peter.toth@...>
Date: 2018-10-24T18:46:07Z
[SPARK-25816][SQL] ResolveReferences works bottom-up on expressions
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