GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/15704
[SPARK-17732][SQL] ALTER TABLE DROP PARTITION should support comparators
## What changes were proposed in this pull request?
This PR aims to support `comparators`, e.g. '<', '<=', '>', '>=', again in
Apache Spark 2.0 for backward compatibility.
**Spark 1.6.2**
``` scala
scala> sql("CREATE TABLE sales(id INT) PARTITIONED BY (country STRING,
quarter STRING)")
res0: org.apache.spark.sql.DataFrame = [result: string]
scala> sql("ALTER TABLE sales DROP PARTITION (country < 'KR')")
res1: org.apache.spark.sql.DataFrame = [result: string]
```
**Spark 2.0**
``` scala
scala> sql("CREATE TABLE sales(id INT) PARTITIONED BY (country STRING,
quarter STRING)")
res0: org.apache.spark.sql.DataFrame = []
scala> sql("ALTER TABLE sales DROP PARTITION (country < 'KR')")
org.apache.spark.sql.catalyst.parser.ParseException:
mismatched input '<' expecting {')', ','}(line 1, pos 42)
```
After this PR, it's supported.
## How was this patch tested?
Pass the Jenkins test with a newly added testcase.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-17732-2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15704.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 #15704
----
commit 84f2315501b2f34d247e8750d1e01fff6ff9fb55
Author: Dongjoon Hyun <dongj...@apache.org>
Date: 2016-10-31T00:46:49Z
[SPARK-17732][SQL] ALTER TABLE DROP PARTITION should support comparators
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