duongcongtoai commented on code in PR #10657:
URL: https://github.com/apache/datafusion/pull/10657#discussion_r1613955127
##########
datafusion/sql/src/utils.rs:
##########
@@ -311,7 +311,7 @@ pub(crate) fn recursive_transform_unnest(
tnr: _,
} = original_expr.transform_up(|expr: Expr| {
if let Expr::Unnest(Unnest { expr: ref arg }) = expr {
- let (data_type, _) =
expr.data_type_and_nullable(input.schema())?;
+ let (data_type, _) =
arg.data_type_and_nullable(input.schema())?;
Review Comment:
validation should happen for expr inside unnest, not the unnest expr itself
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