zzzxl1993 commented on code in PR #36292:
URL: https://github.com/apache/doris/pull/36292#discussion_r1641606526
##########
be/src/olap/rowset/segment_v2/segment_iterator.cpp:
##########
@@ -343,6 +343,34 @@ Status SegmentIterator::_init_impl(const
StorageReadOptions& opts) {
_storage_name_and_type[i] = std::make_pair(col->name(),
storage_type);
}
}
+
+ // find columns that definitely require reading data, such as functions
that are not pushed down.
+ {
+ std::set<std::string> push_down_preds;
+ for (auto* pred : _col_predicates) {
+ if (!_check_apply_by_inverted_index(pred)) {
+ continue;
+ }
+ push_down_preds.insert(_gen_predicate_result_sign(pred));
Review Comment:
This section only calculates which conditions definitely require data
reading, the conditions that do not require data reading are computed in other
logical calculations.
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