luozenglin commented on code in PR #13125:
URL: https://github.com/apache/doris/pull/13125#discussion_r990578722
##########
be/src/vec/core/sort_block.h:
##########
@@ -259,15 +261,25 @@ class ColumnSorter {
flags[not_null_range.first] = 0;
}
if (is_null_range.first < is_null_range.second) {
+ // do not sort null values
std::fill(flags.begin() + is_null_range.first,
- flags.begin() + is_null_range.second, 1);
+ flags.begin() + is_null_range.second, 0);
- flags[is_null_range.first] = 0;
+ if (_limit > is_null_range.first && _limit <=
is_null_range.second) {
+ _limit = is_null_range.second;
Review Comment:
Why can this statement be removed? I think an `UNLIKELY` could be added.
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