findepi commented on code in PR #13660:
URL: https://github.com/apache/datafusion/pull/13660#discussion_r1879648946
##########
datafusion/sql/src/unparser/dialect.rs:
##########
@@ -157,6 +157,15 @@ pub trait Dialect: Send + Sync {
fn full_qualified_col(&self) -> bool {
false
}
+
+ /// Allow to unparse the unnest plan as [ast::TableFactor::UNNEST].
+ ///
+ /// Some dialects like BigQuery require UNNEST to be used in the FROM
clause but
+ /// the LogicalPlan planner always put UNNEST in the SELECT clause. This
flag allows
Review Comment:
actually it's both: unnest input and unnest output. confusing.
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