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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2018/01/25 01:56:00 UTC

[jira] [Updated] (ARROW-1886) [Python] Add function to "flatten" structs within tables

     [ https://issues.apache.org/jira/browse/ARROW-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney updated ARROW-1886:
--------------------------------
    Fix Version/s:     (was: 0.9.0)
                   0.10.0

> [Python] Add function to "flatten" structs within tables
> --------------------------------------------------------
>
>                 Key: ARROW-1886
>                 URL: https://issues.apache.org/jira/browse/ARROW-1886
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 0.10.0
>
>
> See discussion in https://issues.apache.org/jira/browse/ARROW-1873
> When a user has a struct column, it may be more efficient to flatten the struct into multiple columns of the form {{struct_name.field_name}} for each field in the struct. Then when you call {{to_pandas}}, Python dictionaries do not have to be created, and the conversion will be much more efficient



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