GitHub user maryannxue opened a pull request:
https://github.com/apache/spark/pull/21324
[SPARK-24035][SQL] SQL syntax for Pivot - fix antlr warning
## What changes were proposed in this pull request?
1. Change antlr rule to fix the warning.
2. Add PIVOT/LATERAL check in AstBuilder with a more meaningful error
message.
## How was this patch tested?
1. Add a counter case in `PlanParserSuite.test("lateral view")`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/maryannxue/spark spark-24035-fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21324.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 #21324
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commit 5c141f09252ab2bb4b10f8ed191cbd73c3039aab
Author: maryannxue <maryann.xue@...>
Date: 2018-05-14T18:58:56Z
[SPARK-24035] SQL syntax for Pivot (fix Antlr warning)
commit ecd37927ef122a75bf87f1de16d6afc80fd0bf61
Author: maryannxue <maryann.xue@...>
Date: 2018-05-14T19:00:15Z
Merge remote-tracking branch 'origin/master' into spark-24035-fix
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