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| author | gatorsmile <gatorsmile@gmail.com> | 2016-04-26 19:29:34 +0200 |
|---|---|---|
| committer | Herman van Hovell <hvanhovell@questtec.nl> | 2016-04-26 19:29:34 +0200 |
| commit | 162cf02efa025fdb32adc3eaabb8e4232fe90e08 (patch) | |
| tree | bfa1a4573a28fbeb07ecc40cb782b3cbcdc0fdc1 /R | |
| parent | b208229ba1768ee72eae7b6b0da0ac9ccff3be62 (diff) | |
| download | spark-162cf02efa025fdb32adc3eaabb8e4232fe90e08.tar.gz spark-162cf02efa025fdb32adc3eaabb8e4232fe90e08.tar.bz2 spark-162cf02efa025fdb32adc3eaabb8e4232fe90e08.zip | |
[SPARK-14910][SQL] Native DDL Command Support for Describe Function in Non-identifier Format
#### What changes were proposed in this pull request?
The existing `Describe Function` only support the function name in `identifier`. This is different from what Hive behaves. That is why many test cases `udf_abc` in `HiveCompatibilitySuite` are not using our native DDL support. For example,
- udf_not.q
- udf_bitwise_not.q
This PR is to resolve the issues. Now, we can support the command of `Describe Function` whose function names are in the following format:
- `qualifiedName` (e.g., `db.func1`)
- `STRING` (e.g., `'func1'`)
- `comparisonOperator` (e.g,. `<`)
- `arithmeticOperator` (e.g., `+`)
- `predicateOperator` (e.g., `or`)
Note, before this PR, we only have a native command support when the function name is in the format of `qualifiedName`.
#### How was this patch tested?
Added test cases in `DDLSuite.scala`. Also manually verified all the related test cases in `HiveCompatibilitySuite` passed.
Author: gatorsmile <gatorsmile@gmail.com>
Closes #12679 from gatorsmile/descFunction.
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