Function checkSortedWithPermutationImpl

src/Interpreters/sortBlock.cpp:297–313

#ifndef NDEBUG
template <typename Comparator>
void checkSortedWithPermutationImpl(size_t rows, Comparator compare, UInt64 limit, const IColumn::Permutation & permutation)
{
    if (limit && limit < rows)
        rows = limit;

    const bool no_permutaiton = permutation.empty();

    for (size_t i = 1; i < rows; ++i)
    {
        const size_t current_row = no_permutaiton ? i : permutation[i];
        const size_t previous_row = no_permutaiton ? (i - 1) : permutation[i - 1];

        if (compare(current_row, previous_row))
            throw Exception(ErrorCodes::LOGICAL_ERROR,
                "Rows are not sorted with permutation, position {}, previous_row index {}, current_row index {}", i, previous_row, current_row);
    }
}

void checkSortedWithPermutation(const Block & block, const SortDescription & description, UInt64 limit, const IColumn::Permutation & permutation)
{