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https://issues.apache.org/jira/browse/HIVE-20417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16586209#comment-16586209
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Sergey Shelukhin commented on HIVE-20417:
-----------------------------------------
Eh
> Hive converts strings to doubles in a strange manner
> ----------------------------------------------------
>
> Key: HIVE-20417
> URL: https://issues.apache.org/jira/browse/HIVE-20417
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Matt McCline
> Priority: Major
>
> This is not on master, but on a close enough version, so it needs to be dbl
> checked... running with vectorization on:
> {noformat}
> POSTHOOK: query: create table cross_numbers(i string)
> POSTHOOK: query: insert into table cross_numbers select key from src limit 20
> POSTHOOK: query: select c1.i, c2.i, c1.i + c2.i, c1.i + '' + c2.i from
> cross_numbers c1 cross join cross_numbers c2
> 401 265 666.0 NULL
> 401 255 656.0 NULL
> 401 165 566.0 NULL
> {noformat}
> Why are strings added as numbers, and string + '' + string converted to null
> is not clear..
> [~ashutoshc] is plus supposed to work for string?
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