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https://issues.apache.org/jira/browse/HIVE-2693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13536251#comment-13536251
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Mark Grover commented on HIVE-2693:
-----------------------------------
Gunther, to answer your former question. Yes, the trick is to convert double(by
default)-> String -> BigDecimal in the casting code. I just verified with my
latest changes that cast(3.4 as decimal) gives the correct precise BigDecimal.
An added benefit of this is that where clause are now working. No quotes or
literals required. Let me tidy up a few loose ends and I will post the patch up.
About your latest patch, thanks for the testing more. I agree that we should
use compareTo over equals. There is another place where equals() is being used
in PrimitiveObjectInspectorUtils.java I will change that to compareTo() in my
next patch. Was the nasty bug you are referring to related to equals/compareTo
inconsistency?
Thanks again, patch coming soon.
> Add DECIMAL data type
> ---------------------
>
> Key: HIVE-2693
> URL: https://issues.apache.org/jira/browse/HIVE-2693
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor, Types
> Affects Versions: 0.10.0
> Reporter: Carl Steinbach
> Assignee: Prasad Mujumdar
> Attachments: 2693_7.patch, 2693_8.patch, 2693_fix_all_tests1.patch,
> HIVE-2693-10.patch, HIVE-2693-11.patch, HIVE-2693-12-SortableSerDe.patch,
> HIVE-2693-13.patch, HIVE-2693-14.patch, HIVE-2693-1.patch.txt,
> HIVE-2693-all.patch, HIVE-2693-fix.patch, HIVE-2693.patch,
> HIVE-2693-take3.patch, HIVE-2693-take4.patch
>
>
> Add support for the DECIMAL data type. HIVE-2272 (TIMESTAMP) provides a nice
> template for how to do this.
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