eldenmoon commented on code in PR #45947:
URL: https://github.com/apache/doris/pull/45947#discussion_r1903931132
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be/src/vec/columns/column_object.cpp:
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@@ -1279,6 +1337,10 @@ void ColumnObject::insert_range_from(const IColumn& src,
size_t start, size_t le
std::map<std::string_view, Subcolumn>
src_path_and_subcoumn_for_sparse_column;
for (const auto& entry : src_object.subcolumns) {
// Check if we already have such dense column path.
+ if (entry->data.is_root) {
Review Comment:
why root is special
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