GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/17930
[SPARK-20688][SQL] correctly check analysis for scalar sub-queries
## What changes were proposed in this pull request?
In `CheckAnalysis`, we should call `checkAnalysis` for `ScalarSubquery` at
the beginning, as later we will call `plan.output` which is invalid if `plan`
is not resolved.
## How was this patch tested?
new regression test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark tmp
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17930.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 #17930
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commit 3ccff2e552a42af4c69adaf4d8a1a430a98f85b0
Author: Wenchen Fan <[email protected]>
Date: 2017-05-10T04:58:59Z
correctly check analysis for scalar sub-queries
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