yjshen commented on code in PR #2446:
URL: https://github.com/apache/arrow-datafusion/pull/2446#discussion_r867877950
##########
datafusion/expr/src/expr_schema.rs:
##########
@@ -124,6 +124,10 @@ impl ExprSchemable for Expr {
"QualifiedWildcard expressions are not valid in a logical
query plan"
.to_owned(),
)),
+ Expr::GroupingSet(_) => {
+ // grouping sets do not really have a type and do not appear
in projections
+ Ok(DataType::Null)
Review Comment:
👍
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