Method hasColumnFiles

src/Storages/MergeTree/MergeTreeDataPartCompact.cpp:196–225

}

bool MergeTreeDataPartCompact::hasColumnFiles(const NameAndTypePair & column) const
{
    if (!getColumnPosition(column.name))
        return false;

    /// Handle the special case that there has only one compact map column because it will has no data file if just insert {}
    if (hasOnlyOneCompactedMapColumnNotKV())
        return true;

    auto check_stream_exists = [&](const String & bin_file, const String & mrk_file)
    {
        auto checksums = getChecksums();
        auto bin_checksum = checksums->files.find(bin_file);
        auto mrk_checksum = checksums->files.find(mrk_file);

        return bin_checksum != checksums->files.end() && mrk_checksum != checksums->files.end();
    };

    if (column.type->isByteMap())
    {
        for (auto & [file, _] : getChecksums()->files)
        {
            if (isMapImplicitFileNameOfSpecialMapName(file, column.name))
                return true;
        }
        return false;
    }
    else
        return check_stream_exists(DATA_FILE_NAME_WITH_EXTENSION, DATA_FILE_NAME + index_granularity_info.marks_file_extension);
}

void MergeTreeDataPartCompact::setColumnsPtr(const NamesAndTypesListPtr & new_columns_ptr)
{