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Posted to issues@spark.apache.org by "Dongjoon Hyun (JIRA)" <ji...@apache.org> on 2019/05/20 02:54:00 UTC
[jira] [Comment Edited] (SPARK-27768) Infinity, -Infinity, NaN
should be recognized in a case insensitive manner
[ https://issues.apache.org/jira/browse/SPARK-27768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16843595#comment-16843595 ]
Dongjoon Hyun edited comment on SPARK-27768 at 5/20/19 2:53 AM:
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FYI, Spark behavior is compatible with Hive (1.2.1 ~ 2.3.4).
{code}
hive> select CAST('infinity' AS DOUBLE), CAST('Infinity' AS DOUBLE);
OK
NULL Infinity
{code}
was (Author: dongjoon):
FYI, Spark behavior is compatible with Hive.
{code}
hive> select CAST('infinity' AS DOUBLE), CAST('Infinity' AS DOUBLE);
OK
NULL Infinity
{code}
> Infinity, -Infinity, NaN should be recognized in a case insensitive manner
> --------------------------------------------------------------------------
>
> Key: SPARK-27768
> URL: https://issues.apache.org/jira/browse/SPARK-27768
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Xiao Li
> Priority: Major
>
> When the inputs contain the constant 'infinity', Spark SQL does not generate the expected results.
> {code:java}
> SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE))
> FROM (VALUES ('1'), (CAST('infinity' AS DOUBLE))) v(x);
> SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE))
> FROM (VALUES ('infinity'), ('1')) v(x);
> SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE))
> FROM (VALUES ('infinity'), ('infinity')) v(x);
> SELECT avg(CAST(x AS DOUBLE)), var_pop(CAST(x AS DOUBLE))
> FROM (VALUES ('-infinity'), ('infinity')) v(x);{code}
> The root cause: Spark SQL does not recognize the special constants in a case insensitive way. In PostgreSQL, they are recognized in a case insensitive way.
> Link: https://www.postgresql.org/docs/9.3/datatype-numeric.html
>
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