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From "Gopal Vijayaraghavan (Jira)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-22315) Support Decimal64 column division with decimal64 scalar
Date Thu, 10 Oct 2019 05:57:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-22315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16948225#comment-16948225
] 

Gopal Vijayaraghavan edited comment on HIVE-22315 at 10/10/19 5:56 AM:
-----------------------------------------------------------------------

The math for rounding up/down works even for integer fixedpoints. I'll dig up some docs on
it right now.




was (Author: gopalv):
The math for rounding up/down works even for integer fixedpoints. I'll dig up some docs on
it right now.

for (12,2) and 3.95 + -728, here's the round-up/down values to turn into scale6

{code}
scala> ((395 * 10000) / -728)
res1: Int = -5426
{code}

that with scale 6 = -0.005426 which is the same as the DecimalWritable output.

However, the upscaled version doesn't

{code}
scala>  ((395 * 1000_000) / (-728*100))
res4: Int = -5425
{code}

> Support Decimal64 column division with decimal64 scalar
> -------------------------------------------------------
>
>                 Key: HIVE-22315
>                 URL: https://issues.apache.org/jira/browse/HIVE-22315
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Ramesh Kumar Thangarajan
>            Assignee: Ramesh Kumar Thangarajan
>            Priority: Major
>         Attachments: HIVE-22315.1.patch
>
>
> Currently division operation is not supported for Decimal64 column. This Jira will take
care of supporting decimal64 column division with a decimal64 scalar.



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