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https://issues.apache.org/jira/browse/SPARK-13553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15171817#comment-15171817
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Apache Spark commented on SPARK-13553:
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User 'liancheng' has created a pull request for this issue:
https://github.com/apache/spark/pull/11431
> Migrate basic inspection operations
> -----------------------------------
>
> Key: SPARK-13553
> URL: https://issues.apache.org/jira/browse/SPARK-13553
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Cheng Lian
> Assignee: Cheng Lian
>
> Should migrate the following methods and corresponding tests to Dataset:
> {noformat}
> - Basic inspection operations
> - dtypes
> - columns
> - printSchema
> - explain
> - Column accessors
> - col
> - apply
> {noformat}
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