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https://issues.apache.org/jira/browse/FLINK-2980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15834610#comment-15834610
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ASF GitHub Bot commented on FLINK-2980:
---------------------------------------
Github user twalthr commented on a diff in the pull request:
https://github.com/apache/flink/pull/3026#discussion_r97324083
--- Diff:
flink-test-utils-parent/flink-test-utils/src/main/java/org/apache/flink/test/util/TestBaseUtils.java
---
@@ -408,10 +408,20 @@ public static void
compareKeyValuePairsWithDelta(String expectedLines, String re
}
}
+ public static <X extends Comparable<? super X>> void
compareResultCollections(List<X> expected, List<X> actual) {
--- End diff --
Please try to avoid modifying classes outside of `flink-table` unless
really necessary.
> Add CUBE/ROLLUP/GROUPING SETS operator in Table API.
> ----------------------------------------------------
>
> Key: FLINK-2980
> URL: https://issues.apache.org/jira/browse/FLINK-2980
> Project: Flink
> Issue Type: New Feature
> Components: Documentation, Table API & SQL
> Reporter: Chengxiang Li
> Assignee: Alexander Chermenin
> Attachments: Cube-Rollup-GroupSet design doc in Flink.pdf
>
>
> Computing aggregates over a cube/rollup/grouping sets of several dimensions
> is a common operation in data warehousing. It would be nice to have them in
> Table API.
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