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https://issues.apache.org/jira/browse/SPARK-29342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-29342.
-----------------------------------
Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 26010
[https://github.com/apache/spark/pull/26010]
> Make casting strings to intervals case insensitive
> ---------------------------------------------------
>
> Key: SPARK-29342
> URL: https://issues.apache.org/jira/browse/SPARK-29342
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Minor
> Fix For: 3.0.0
>
>
> PostgreSQL is not sensitive to case of interval string values:
> {code}
> maxim=# select cast('10 Days' as INTERVAL);
> interval
> ----------
> 10 days
> (1 row)
> {code}
> but Spark is not tolerant to case:
> {code}
> spark-sql> select cast('INTERVAL 10 DAYS' as INTERVAL);
> NULL
> spark-sql> select cast('interval 10 days' as INTERVAL);
> interval 1 weeks 3 days
> {code}
>
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