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https://issues.apache.org/jira/browse/SPARK-27768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-27768.
-----------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0
Issue resolved by pull request 25331
[https://github.com/apache/spark/pull/25331]
> 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
> Assignee: Dilip Biswal
> Priority: Major
> Fix For: 3.0.0
>
>
> 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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