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https://issues.apache.org/jira/browse/SPARK-8864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14616268#comment-14616268
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Adrian Wang commented on SPARK-8864:
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Thanks for the design.
Two comments:
1. If a IntervalType value is in year-month format, we cannot use 100ns to
represent it. Hive use two internal types to handle year-month and day-time
separately.
2. When casting TimestampType into StringType, or casting from
StringType(unless it is a ISO8601 time string which contains timezone info), we
should also consider timezone.
> Date/time function and data type design
> ---------------------------------------
>
> Key: SPARK-8864
> URL: https://issues.apache.org/jira/browse/SPARK-8864
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Reynold Xin
> Fix For: 1.5.0
>
> Attachments: SparkSQLdatetimeudfs.pdf
>
>
> Please see the attached design doc.
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