eldenmoon commented on code in PR #39022:
URL: https://github.com/apache/doris/pull/39022#discussion_r1722589356


##########
be/src/vec/columns/column_object.h:
##########
@@ -94,6 +95,11 @@ class ColumnObject final : public COWHelper<IColumn, 
ColumnObject> {
     // Using jsonb type as most common type, since it's adopted all types of 
json
     using MostCommonType = DataTypeJsonb;
     constexpr static TypeIndex MOST_COMMON_TYPE_ID = TypeIndex::JSONB;
+    // Nullable(Array(Nullable(Object)))
+    const static DataTypePtr NESTED_TYPE;
+    // Finlize mode for subcolumns, write mode will deal with sparse columns, 
only affects in flush block to segments.

Review Comment:
   done



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