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https://issues.apache.org/jira/browse/SPARK-27946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-27946.
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Fix Version/s: 3.0.0
Assignee: L. C. Hsieh
Resolution: Fixed
> Hive DDL to Spark DDL conversion USING "show create table"
> ----------------------------------------------------------
>
> Key: SPARK-27946
> URL: https://issues.apache.org/jira/browse/SPARK-27946
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Xiao Li
> Assignee: L. C. Hsieh
> Priority: Major
> Fix For: 3.0.0
>
>
> This patch adds a DDL command SHOW CREATE TABLE AS SERDE. It is used to
> generate Hive DDL for a Hive table.
> For original SHOW CREATE TABLE, it now shows Spark DDL always. If given a
> Hive table, it tries to generate Spark DDL.
> For Hive serde to data source conversion, this uses the existing mapping
> inside HiveSerDe. If can't find a mapping there, throws an analysis exception
> on unsupported serde configuration.
> It is arguably that some Hive fileformat + row serde might be mapped to Spark
> data source, e.g., CSV. It is not included in this PR. To be conservative, it
> may not be supported.
> For Hive serde properties, for now this doesn't save it to Spark DDL because
> it may not useful to keep Hive serde properties in Spark table.
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