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https://issues.apache.org/jira/browse/SPARK-24849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608695#comment-16608695
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Apache Spark commented on SPARK-24849:
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User 'gatorsmile' has created a pull request for this issue:
https://github.com/apache/spark/pull/22377
> Convert StructType to DDL string
> --------------------------------
>
> Key: SPARK-24849
> URL: https://issues.apache.org/jira/browse/SPARK-24849
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Minor
> Fix For: 2.4.0
>
>
> Need to add new methods which should convert a value of StructType to a
> schema in DDL format . It should be possible to use the former string in new
> table creation by just copy-pasting of new method results. The existing
> methods simpleString(), catalogString() and sql() put ':' between top level
> field name and its type, and wrap by the *struct* word
> {code}
> ds.schema.catalogString
> struct<metaData:struct<eventId:string ...
> {code}
> Output of new method should be
> {code}
> metaData struct<eventId:string ...
> {code}
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