Method tryGetSubcolumn

src/DataTypes/IDataType.cpp:277–282

}

ColumnPtr IDataType::tryGetSubcolumn(std::string_view subcolumn_name, const ColumnPtr & column) const
{
    auto data = SubstreamData(getSerialization(*getSerializationInfo(*column))).withType(getPtr()).withColumn(column);
    auto subcolumn_data = getSubcolumnData(subcolumn_name, data, {}, false);
    return subcolumn_data ? subcolumn_data->column : nullptr;
}

ColumnPtr IDataType::getSubcolumn(std::string_view subcolumn_name, const ColumnPtr & column) const
{