AngersZhuuuu commented on a change in pull request #32022:
URL: https://github.com/apache/spark/pull/32022#discussion_r605510571
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
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@@ -914,19 +914,19 @@ class AstBuilder extends SqlBaseBaseVisitor[AnyRef] with
SQLConfHelper with Logg
selectExpressions: Seq[NamedExpression],
query: LogicalPlan): LogicalPlan = withOrigin(ctx) {
if (ctx.groupingExpressionsWithGroupingAnalytics.isEmpty) {
- val groupByExpressions = expressionList(ctx.groupingExpressions)
if (ctx.GROUPING != null) {
- // GROUP BY .... GROUPING SETS (...)
- // `GROUP BY warehouse, product GROUPING SETS((warehouse, producets),
(warehouse))` is
- // semantically equivalent to `GROUP BY GROUPING SETS((warehouse,
produce), (warehouse))`.
- // Under this grammar, the fields appearing in `GROUPING SETS`'s
groupingSets must be a
- // subset of the columns appearing in group by expression.
+ // GROUP BY GROUPING SETS (...)
+ if (!ctx.groupingExpressions.isEmpty) {
+ logWarning("The groupBy expressions between 'GROUP BY' and 'GROUPING
SETS' will " +
+ "be ignored and this syntax is deprecated. Please use 'GROUP BY
GROUPING SETS (...)' " +
+ "directly.")
+ }
Review comment:
One waring is the behavior of
```
GROUP BY a, b, c GROUPING SETS((a, b), (a), (b))
```
will change after this.
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