GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/17171
[SPARK-19830] [SQL] Add parseTableSchema API to ParserInterface
### What changes were proposed in this pull request?
Specifying the table schema in DDL formats is needed for different
scenarios. For example,
- [specifying the schema in SQL function `from_json` using DDL
formats](https://issues.apache.org/jira/browse/SPARK-19637), which is suggested
by @marmbrus ,
- [specifying the customized JDBC data
types](https://github.com/apache/spark/pull/16209).
These two PRs need users to use the JSON format to specify the table
schema. This is not user friendly.
This PR is to provide a `parseTableSchema` API in `ParserInterface`.
### How was this patch tested?
Added a test suite `TableSchemaParserSuite`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark parseDDLStmt
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17171.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 #17171
----
commit 50f74d26ec1bc37c5f5bea054da60a1910778e46
Author: Xiao Li <[email protected]>
Date: 2017-03-06T04:18:20Z
add parseTableSchema API
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