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Fix: correct sort description for ReadFromMergeTree with read in order

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optimization
This commit is contained in:
Igor Nikonov 2022-09-18 22:21:13 +00:00
parent 560bc2bc22
commit e888859396
2 changed files with 7 additions and 0 deletions
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2
src/Core/SortDescription.h
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@ -48,6 +48,8 @@ struct SortColumnDescription
bool with_fill;
FillColumnDescription fill_description;
SortColumnDescription() = default;
explicit SortColumnDescription(
const std::string & column_name_,
int direction_ = 1,

5
src/Processors/QueryPlan/ReadFromMergeTree.cpp
View File

@ -143,7 +143,12 @@ ReadFromMergeTree::ReadFromMergeTree(
{
auto const & settings = context->getSettingsRef();
if ((settings.optimize_read_in_order || settings.optimize_aggregation_in_order) && query_info.getInputOrderInfo())
{
output_stream->sort_scope = DataStream::SortScope::Stream;
const auto used_prefix_of_sorting_key_size = query_info.getInputOrderInfo()->used_prefix_of_sorting_key_size;
if (sort_description.size() > used_prefix_of_sorting_key_size)
sort_description.resize(used_prefix_of_sorting_key_size);
}
else
output_stream->sort_scope = DataStream::SortScope::Chunk;
}