Xiao Li created SPARK-14910:
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Summary: Native DDL Command Support for Describe Function in
Non-identifier Format
Key: SPARK-14910
URL: https://issues.apache.org/jira/browse/SPARK-14910
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.0.0
Reporter: Xiao Li
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` do not pass. For example,
- udf_not.q
- udf_bitwise_not.q
We need to support the command of `Describe Function` whose function names are
in the following formats that are not natively supported:
- `STRING` (e.g., `'func1'`)
- `comparisonOperator` (e.g,. `<`)
- `arithmeticOperator` (e.g., `+`)
- `predicateOperator` (e.g., `or`)
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