Method insertResultToColumn

src/Functions/FunctionSQLJSON.h:996–1033

    static size_t getNumberOfIndexArguments(const ColumnsWithTypeAndName & arguments) { return arguments.size() - 1; }

    static bool insertResultToColumn(IColumn & dest, Iterator & iterator, ASTPtr & query_ptr, DialectType /*dialect_type*/) requires IsElementIterator<Iterator>
    {
        using Element = typename Iterator::Element;
        using JSONParser = typename Iterator::JSONParserType;
        GeneratorJSONPath<JSONParser> generator_json_path(query_ptr);
        Element current_element = iterator.getElement();
        VisitorStatus status;
        Element res;
        while ((status = generator_json_path.getNextItem(current_element)) != VisitorStatus::Exhausted)
        {
            if (status == VisitorStatus::Ok)
            {
                if (!(current_element.isArray() || current_element.isObject()))
                {
                    break;
                }
            }
            else if (status == VisitorStatus::Error)
            {
                /// ON ERROR
                /// Here it is possible to handle errors with ON ERROR (as described in ISO/IEC TR 19075-6),
                ///  however this functionality is not implemented yet
            }
            current_element = iterator.getElement();
        }

        if (status == VisitorStatus::Exhausted)
        {
            return false;
        }

        std::stringstream out; // STYLE_CHECK_ALLOW_STD_STRING_STREAM
        out << current_element.getElement();
        auto output_str = out.str();
        ColumnString & col_str = assert_cast<ColumnString &>(dest);
        col_str.insertData(output_str.data(), output_str.size());
        return true;
    }

    static bool insertResultToColumn(IColumn & dest, ObjectIterator & iterator, ASTPtr & query_ptr, DialectType /*dialect_type*/) requires IsObjectIterator<Iterator>
    {