xingyingone commented on code in PR #23474:
URL: https://github.com/apache/doris/pull/23474#discussion_r1308469617
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be/src/vec/aggregate_functions/aggregate_function_collect.cpp:
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@@ -27,21 +27,25 @@
namespace doris::vectorized {
-template <typename T, typename HasLimit>
+template <typename T, typename HasLimit, typename ShowNull>
AggregateFunctionPtr do_create_agg_function_collect(bool distinct, const
DataTypes& argument_types,
const bool
result_is_nullable) {
- if (distinct) {
- return creator_without_type::create<
- AggregateFunctionCollect<AggregateFunctionCollectSetData<T,
HasLimit>, HasLimit>>(
+ if (ShowNull::value) {
Review Comment:
as below:
//ShowNull is just used to support array_agg because array_agg needs to
display NULL
//todo: Supports order by sorting for array_agg
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