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Fix initializing

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This commit is contained in:
Igor Markelov 2024-05-13 12:46:01 +00:00
parent f0daeca92b
commit 72231facd4
1 changed files with 11 additions and 0 deletions
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11
src/Interpreters/BestCompressionPermutation.cpp
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@ -2,6 +2,7 @@
#include <base/sort.h>
#include <Columns/IColumn.h>
#include <Common/iota.h>
#include <Common/PODArray.h>
#include <Interpreters/sortBlock.h>
@ -122,6 +123,16 @@ EqualRanges getEqualRanges(const Block & block, const SortDescription & descript
void getBestCompressionPermutation(const Block & block, const SortDescription & description, IColumn::Permutation & permutation)
{
if (!block)
return;
if (!permutation.empty() && block.rows() != permutation.size())
throw Exception(ErrorCodes::LOGICAL_ERROR, "!permutation.empty() && block.rows() != permutation.size()");
if (permutation.empty())
{
size_t size = block.rows();
permutation.resize(size);
iota(permutation.data(), size, IColumn::Permutation::value_type(0));
}
const auto equal_ranges = getEqualRanges(block, description, permutation);
const auto not_already_sorted_columns = getNotAlreadySortedColumnsIndex(block, description);
for (const auto & range : equal_ranges)