maropu commented on a change in pull request #30212:
URL: https://github.com/apache/spark/pull/30212#discussion_r518587473
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/grouping.scala
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@@ -79,6 +79,29 @@ case class Cube(groupByExprs: Seq[Expression]) extends
GroupingSet {}
// scalastyle:on line.size.limit line.contains.tab
case class Rollup(groupByExprs: Seq[Expression]) extends GroupingSet {}
+// scalastyle:off line.size.limit line.contains.tab
+@ExpressionDescription(
+ usage = """
+ _FUNC_(([col1[, col2 ..]])*) - create a multi-dimensional grouping sets
using the specified columns
Review comment:
We need `ExpressionDescription` for these grouping analytics exprs? We
already have documents for them though:
https://spark.apache.org/docs/3.0.1/sql-ref-syntax-qry-select-groupby.html
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