duongcongtoai commented on code in PR #11577:
URL: https://github.com/apache/datafusion/pull/11577#discussion_r1761654336
##########
datafusion/expr/src/logical_plan/plan.rs:
##########
@@ -2921,17 +2922,53 @@ pub enum Partitioning {
DistributeBy(Vec<Expr>),
}
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub enum ColumnUnnestType {
+ List(Vec<ColumnUnnestList>),
+ // for struct, there can only be one unnest performed on one column at a
time
+ Struct,
+ // Infer the unnest type based on column schema
+ // If column is a list column, the unnest depth will be 1
+ // This value is to support sugar syntax of old api
(unnest(columns1,columns2))
Review Comment:
i refactor and added more documentation, please help me take a look
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