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https://issues.apache.org/jira/browse/SPARK-36851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17420092#comment-17420092
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Max Gekk commented on SPARK-36851:
----------------------------------
There is a workaround:
{code:sql}
spark-sql> select interval '-1' year;
-1-0
{code}
> Incorrect parsing of negative ANSI typed interval literals
> ----------------------------------------------------------
>
> Key: SPARK-36851
> URL: https://issues.apache.org/jira/browse/SPARK-36851
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Max Gekk
> Priority: Major
>
> If start field and end field are the same, parser doesn't take into account
> the sign before interval literal string. For example:
> Works fine:
> {code:sql}
> spark-sql> select interval -'1-1' year to month;
> -1-1
> {code}
> Incorrect result:
> {code:sql}
> spark-sql> select interval -'1' year;
> 1-0
> {code}
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