jacktengg commented on code in PR #43624:
URL: https://github.com/apache/doris/pull/43624#discussion_r1838072319


##########
be/src/vec/columns/column_string.cpp:
##########
@@ -134,34 +133,41 @@ void ColumnStr<T>::insert_range_from(const IColumn& src, 
size_t start, size_t le
     if (length == 0) {
         return;
     }
+    auto do_insert = [&](const auto& src_concrete) {

Review Comment:
   if `to_size` is bigger than `from_size`, extra element is empty string, 
total stringg size will not bigger than src size.



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