HappenLee commented on code in PR #41623:
URL: https://github.com/apache/doris/pull/41623#discussion_r1794907180
##########
be/src/vec/columns/column_vector.cpp:
##########
@@ -431,6 +431,16 @@ size_t ColumnVector<T>::filter(const IColumn::Filter&
filter) {
return new_size;
}
+template <typename T>
+void ColumnVector<T>::insert_many_from(const IColumn& src, size_t position,
size_t length) {
+ auto old_size = data.size();
+ data.resize(old_size + length);
+ auto& vals = assert_cast<const Self&>(src).get_data();
Review Comment:
better use `memcpy` to do the work
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