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https://issues.apache.org/jira/browse/ARROW-3329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17034951#comment-17034951
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Jacek Pliszka edited comment on ARROW-3329 at 2/12/20 12:49 AM:
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OK, I've resolved the issue but now arrived at probably the clue of the issues.
Looks like at lowest level casting kernel knows nothing about scale, am I
reading it correctly?
So either we need to pass scale there or apply it somewhere above. Is there any
suggestion for that?
If indeed scale is not know - maybe it can be passed in CastOptions?
was (Author: jacek.pliszka):
OK, I've resolved the issue but now arrived at probably the clue of the issues.
Looks like at lowest level casting kernel knows nothing about scale, am I
reading it correctly?
So either we need to pass scale there or apply it somewhere above. Is there any
suggestion for that?
> [Python] Error casting decimal(38, 4) to int64
> ----------------------------------------------
>
> Key: ARROW-3329
> URL: https://issues.apache.org/jira/browse/ARROW-3329
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Environment: Python version : 3.6.5
> Pyarrow version : 0.10.0
> Reporter: Kavita Sheth
> Priority: Major
>
> Git issue LInk : https://github.com/apache/arrow/issues/2627
> I want to cast pyarrow table column from decimal(38,4) to int64.
> col.cast(pa.int64())
> Error:
> File "pyarrow/table.pxi", line 443, in pyarrow.lib.Column.cast
> File "pyarrow/error.pxi", line 89, in pyarrow.lib.check_status
> pyarrow.lib.ArrowNotImplementedError: No cast implemented from decimal(38,
> 4) to int64
> Python version : 3.6.5
> Pyarrow version : 0.10.0
> is it not implemented yet or I am not using it correctly? If not implemented
> yet, then any work around to cast columns?
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