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https://issues.apache.org/jira/browse/SPARK-29651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-29651:
-----------------------------------
Assignee: Maxim Gekk
> Incorrect parsing of interval seconds fraction
> ----------------------------------------------
>
> Key: SPARK-29651
> URL: https://issues.apache.org/jira/browse/SPARK-29651
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0, 2.1.0, 2.2.0, 2.3.0, 2.4.0
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Minor
>
> * The fractional part of interval seconds unit is incorrectly parsed if the
> number of digits is less than 9, for example:
> {code}
> spark-sql> select interval '10.123456 seconds';
> interval 10 seconds 123 microseconds
> {code}
> The result must be *interval 10 seconds 123 milliseconds 456 microseconds*
> * If the seconds unit of an interval is negative, it is incorrectly converted
> to `CalendarInterval`, for example:
> {code}
> spark-sql> select interval '-10.123456789 seconds';
> interval -9 seconds -876 milliseconds -544 microseconds
> {code}
> Taking into account truncation to microseconds, the result must be *interval
> -10 seconds -123 milliseconds -456 microseconds*
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