Function create

src/DataTypes/DataTypeMap.cpp:197–209

}

static DataTypePtr create(const ASTPtr & arguments)
{
    if (!arguments || arguments->children.size() != 2)
        throw Exception("Map data type family must have two arguments: key and value types", ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);

    DataTypes nested_types;
    nested_types.reserve(arguments->children.size());

    for (const ASTPtr & child : arguments->children)
        nested_types.emplace_back(DataTypeFactory::instance().get(child));

    return std::make_shared<DataTypeMap>(nested_types);
}

void registerDataTypeMap(DataTypeFactory & factory)
{