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https://issues.apache.org/jira/browse/TAJO-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842211#comment-13842211
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Jihoon Son commented on TAJO-391:
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DaeMyung, thanks for your additional explanation.
I finally understand your point.
Sorry for my misunderstanding.
I'll commit this patch.
> Change setting default type in query from FLOAT4 to FLOAT8
> ----------------------------------------------------------
>
> Key: TAJO-391
> URL: https://issues.apache.org/jira/browse/TAJO-391
> Project: Tajo
> Issue Type: Improvement
> Components: operator/function/udf
> Reporter: DaeMyung Kang
> Assignee: DaeMyung Kang
> Priority: Minor
> Fix For: 0.8-incubating
>
> Attachments: TAJO-391.patch
>
>
> FLOAT4 is default parsed float type in tajo.
> but it can cause some trobles when we use it as FLOAT8.
> for examples.
> 0.4(f) will changed to 0.40000000000005(d)
> so it cause different result from java.Math functions.
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