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From "Dilip Biswal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-27768) Infinity, -Infinity, NaN should be recognized in a case insensitive manner
Date Wed, 03 Jul 2019 22:04:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-27768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16878185#comment-16878185
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Dilip Biswal commented on SPARK-27768:
--------------------------------------

[~dongjoon] Thank you very much for your response.

> 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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