GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/12794
[SPARK-15020][SQL] GROUP-BY should support Aliases
## What changes were proposed in this pull request?
`GROUP-BY` clauses raise **AnalysisException** for aliases while `ORDER-BY`
clauses support them correctly. This PR aims to support aliases in `GROUP-BY`
clause. This is one of frequently-used syntax to avoid unnecessary repetition.
```
scala> sql("select 1 a group by a").head
org.apache.spark.sql.AnalysisException: cannot resolve '`a`' given input
columns: []; line 1 pos 20
scala> sql("select 1 a order by a").head
res1: org.apache.spark.sql.Row = [1]
```
## How was this patch tested?
Pass the Jenkins tests (including a new testcase)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-15020
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12794.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 #12794
----
commit 71249cfeb9e798e41d8ef0f7423b48685a1774e7
Author: Dongjoon Hyun <[email protected]>
Date: 2016-04-29T23:17:05Z
[SPARK-15020][SQL] GROUP-BY should support Aliases
```
sql("select a x from values 1 T(a) group by x").explain
org.apache.spark.sql.AnalysisException: cannot resolve '`x`' given input
columns: [a]; line 1 pos 39
```
----
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
