GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/18744
[SPARK-21538][SQL] Fix attribute resolution inconsistency in Dataset API
## What changes were proposed in this pull request?
Given a string column name, the following operation fails with an
`AnalysisException`:
spark.range(1).withColumnRenamed("id", "x").sort("id")
However, the other APIs work:
spark.range(1).withColumnRenamed("id", "x").sort(col("id"))
spark.range(1).withColumnRenamed("id", "x").sort($"id")
spark.range(1).withColumnRenamed("id", "x").sort('id)
This `sort` API should defer attribute resolution to analysis.
## How was this patch tested?
Added unit test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 SPARK-21538
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18744.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 #18744
----
commit 6364bb0b0abb4d4bf1243a83d1aa012944008f71
Author: Liang-Chi Hsieh <[email protected]>
Date: 2017-07-27T03:00:46Z
Fix attribute resolution inconsistency.
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