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https://issues.apache.org/jira/browse/FLINK-4294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15401935#comment-15401935
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ASF GitHub Bot commented on FLINK-4294:
---------------------------------------
GitHub user twalthr opened a pull request:
https://github.com/apache/flink/pull/2319
[FLINK-4294] [table] Allow access of composite type fields
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This PR implements composite types for the Table API & SQL. Fields of
Flink's composite types such as Tuples, POJO, etc. can be accessed from within
expressions/SQL (see also CompositeAccessTest for examples). This PR is not
mergable at the moment as Calcite does not allow for selecting entire composite
types. I will write on the Calcite ML for this.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/twalthr/flink FLINK-4294
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2319.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2319
----
commit 9ffc30416cb0873381b0b0bf484119bdd4459bdd
Author: twalthr <[email protected]>
Date: 2016-08-01T12:15:49Z
[FLINK-4294] [table] Allow access of composite type fields
----
> Allow access of composite type fields
> -------------------------------------
>
> Key: FLINK-4294
> URL: https://issues.apache.org/jira/browse/FLINK-4294
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> Currently all Flink CompositeTypes are treated as GenericRelDataTypes. It
> would be better to access individual fields of composite types, too. e.g.
> {code}
> SELECT composite.name FROM composites
> SELECT tuple.f0 FROM tuples
> 'f0.getField(0)
> {code}
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