Function updateObjectColumns

src/DataTypes/ObjectUtils.cpp:515–532

}

void updateObjectColumns(
    ColumnsDescription & object_columns,
    const ColumnsDescription & storage_columns,
    const NamesAndTypesList & new_columns)
{
    for (const auto & new_column : new_columns)
    {
        auto object_column = object_columns.tryGetColumn(GetColumnsOptions::All, new_column.name);
        if (object_column && !object_column->type->equals(*new_column.type))
        {
            auto storage_column = storage_columns.getColumn(GetColumnsOptions::All, new_column.name);
            object_columns.modify(new_column.name, [&](auto & column)
            {
                column.type = getLeastCommonTypeForDynamicColumns(storage_column.type, {object_column->type, new_column.type});
            });
        }
    }
}

namespace
{