HappenLee commented on code in PR #17594:
URL: https://github.com/apache/doris/pull/17594#discussion_r1130886903
##########
be/src/vec/data_types/data_type.cpp:
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@@ -56,6 +56,7 @@ void IDataType::update_avg_value_size_hint(const IColumn&
column, double& avg_va
ColumnPtr IDataType::create_column_const(size_t size, const Field& field)
const {
auto column = create_column();
+ column->reserve(size);
Review Comment:
const column nested column only need size == 1, do not need reserve `size`
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