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https://issues.apache.org/jira/browse/CASSANDRA-11255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15199190#comment-15199190
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Sylvain Lebresne commented on CASSANDRA-11255:
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The only thing I'm wondering is if for consistency we shouldn't have a
{{floatprecision}} for COPY, even if it default to the cqlsh option. Otherwise,
it's weird when you want to change both precision to have to use the cqlsh
option for float and the COPY one for double. Also, wouldn't it make sense to
add a {{double_precision}} option to cqlsh for consistency?
> COPY TO should have higher double precision
> -------------------------------------------
>
> Key: CASSANDRA-11255
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11255
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Reporter: Stefania
> Assignee: Stefania
> Labels: doc-impacting, lhf
> Fix For: 3.x
>
>
> At the moment COPY TO uses the same float precision as cqlsh, which by
> default is 5 but it can be changed in cqlshrc. However, typically people want
> to preserve precision when exporting data and so this default is too low for
> COPY TO.
> I suggest adding a new COPY FROM option to specify floating point precision
> with a much higher default value, for example 12.
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