Function getColumnAnnotation

src/Processors/QueryPlan/QueryPlanFormat.cpp:460–465

    }

    std::string_view getColumnAnnotation(const String & column_name, const ExplainFormatSettings & settings)
    {
        if (auto it = settings.pretty_names.find(column_name); it != settings.pretty_names.end())
            return it->second.annotation;
        return {};
    }

    static void addAggregatesPrettyNames(const Aggregator::Params & params, std::unordered_map<String, PrettyColumnName> & pretty_names)
    {