goldmedal commented on code in PR #15159:
URL: https://github.com/apache/datafusion/pull/15159#discussion_r1991567742
##########
datafusion/sql/src/unparser/plan.rs:
##########
@@ -377,8 +377,17 @@ impl Unparser<'_> {
};
if self.dialect.unnest_as_table_factor() &&
unnest_input_type.is_some() {
if let LogicalPlan::Unnest(unnest) = &p.input.as_ref() {
- return self
- .unnest_to_table_factor_sql(unnest, query, select,
relation);
+ if let LogicalPlan::Projection(projection) =
unnest.input.as_ref()
+ {
+ if matches!(
+ projection.input.as_ref(),
+ LogicalPlan::EmptyRelation(_)
Review Comment:
It's better to add some comments to explain why we match `EmptyRelation`.
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