Yuming Wang created SPARK-20948:
-----------------------------------
Summary: Built-in SQL Function UnaryMinus/UnaryPositive support
string type
Key: SPARK-20948
URL: https://issues.apache.org/jira/browse/SPARK-20948
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 2.2.0
Reporter: Yuming Wang
{{UnaryMinus}}/{{UnaryPositive}} function should support string type, same as
hive:
{code:sql}
$ bin/hive
Logging initialized using configuration in
jar:file:/home/wym/apache-hive-1.2.2-bin/lib/hive-common-1.2.2.jar!/hive-log4j.properties
hive> select positive('-1.11'), negative('-1.11');
OK
-1.11 1.11
Time taken: 1.937 seconds, Fetched: 1 row(s)
hive>
{code}
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