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https://issues.apache.org/jira/browse/HIVE-3454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457329#comment-13457329
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Richard Nadeau commented on HIVE-3454:
--------------------------------------
Additional information/workaround:
This looks like a nanosecond bug similar to HIVE-3090, so I tried this:
cast((unix_timestamp() * 1.0) as TIMESTAMP)
and got this:
2012-09-17 14:49:39.0
Which is what it should be, but I would have expected this to be handled
without the "conversion".
cast(round(unix_timestamp(),3) as TIMESTAMP)
Will also work.
> Problem with CAST(BIGINT as TIMESTAMP)
> --------------------------------------
>
> Key: HIVE-3454
> URL: https://issues.apache.org/jira/browse/HIVE-3454
> Project: Hive
> Issue Type: Bug
> Components: Types, UDF
> Affects Versions: 0.9.0
> Reporter: Ryan Harris
>
> Ran into an issue while working with timestamp conversion.
> CAST(unix_timestamp() as TIMESTAMP) should create a timestamp for the current
> time from the BIGINT returned by unix_timestamp()
> Instead, however, a 1970-01-16 timestamp is returned.
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