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https://issues.apache.org/jira/browse/FLINK-2980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15834613#comment-15834613
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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_r97307329
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/table.scala
---
@@ -15,14 +15,17 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
+
package org.apache.flink.table.api
import org.apache.calcite.rel.RelNode
+import org.apache.calcite.sql.SqlKind
+import org.apache.calcite.tools.RelBuilder
import org.apache.flink.api.common.typeinfo.TypeInformation
import org.apache.flink.api.java.operators.join.JoinType
import org.apache.flink.table.calcite.FlinkTypeFactory
-import org.apache.flink.table.plan.logical.Minus
-import org.apache.flink.table.expressions.{Alias, Asc, Call, Expression,
ExpressionParser, Ordering, TableFunctionCall, UnresolvedAlias}
+import org.apache.flink.table.plan.logical.{Minus => MinusNode}
+import org.apache.flink.table.expressions._
--- End diff --
Is this import and the renaming of Minus 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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