Method __init__

lib/sqlalchemy/sql/schema.py:1780–2449

r""" Construct a new ``Column`` object. :param name: The name of this column as represented in the database. This argument may be the first positional argument, or specified via keyword. Names which contain no upper case characters will be tr

(
        self,
        __name_pos: Optional[
            Union[str, _TypeEngineArgument[_T], SchemaEventTarget]
        ] = None,
        __type_pos: Optional[
            Union[_TypeEngineArgument[_T], SchemaEventTarget]
        ] = None,
        /,
        *args: SchemaEventTarget,
        name: Optional[str] = None,
        type_: Optional[_TypeEngineArgument[_T]] = None,
        autoincrement: _AutoIncrementType = "auto",
        default: Optional[Any] = _NoArg.NO_ARG,
        insert_default: Optional[Any] = _NoArg.NO_ARG,
        doc: Optional[str] = None,
        key: Optional[str] = None,
        index: Optional[bool] = None,
        unique: Optional[bool] = None,
        info: Optional[_InfoType] = None,
        nullable: Optional[
            Union[bool, Literal[SchemaConst.NULL_UNSPECIFIED]]
        ] = SchemaConst.NULL_UNSPECIFIED,
        onupdate: Optional[Any] = None,
        primary_key: bool = False,
        server_default: Optional[_ServerDefaultArgument] = None,
        server_onupdate: Optional[_ServerOnUpdateArgument] = None,
        quote: Optional[bool] = None,
        system: bool = False,
        comment: Optional[str] = None,
        insert_sentinel: bool = False,
        _omit_from_statements: bool = False,
        _proxies: Optional[Any] = None,
        **dialect_kwargs: Any,
    )

    server_default: Optional[FetchedValue]

    def __init__(
        self,
        __name_pos: Optional[
            Union[str, _TypeEngineArgument[_T], SchemaEventTarget]
        ] = None,
        __type_pos: Optional[
            Union[_TypeEngineArgument[_T], SchemaEventTarget]
        ] = None,
        /,
        *args: SchemaEventTarget,
        name: Optional[str] = None,
        type_: Optional[_TypeEngineArgument[_T]] = None,
        autoincrement: _AutoIncrementType = "auto",
        default: Optional[Any] = _NoArg.NO_ARG,
        insert_default: Optional[Any] = _NoArg.NO_ARG,
        doc: Optional[str] = None,
        key: Optional[str] = None,
        index: Optional[bool] = None,
        unique: Optional[bool] = None,
        info: Optional[_InfoType] = None,
        nullable: Optional[
            Union[bool, Literal[SchemaConst.NULL_UNSPECIFIED]]
        ] = SchemaConst.NULL_UNSPECIFIED,
        onupdate: Optional[Any] = None,
        primary_key: bool = False,
        server_default: Optional[_ServerDefaultArgument] = None,
        server_onupdate: Optional[_ServerOnUpdateArgument] = None,
        quote: Optional[bool] = None,
        system: bool = False,
        comment: Optional[str] = None,
        insert_sentinel: bool = False,
        _omit_from_statements: bool = False,
        _proxies: Optional[Any] = None,
        **dialect_kwargs: Any,
    ):
        r"""
        Construct a new ``Column`` object.

        :param name: The name of this column as represented in the database.
          This argument may be the first positional argument, or specified
          via keyword.

          Names which contain no upper case characters
          will be treated as case insensitive names, and will not be quoted
          unless they are a reserved word.  Names with any number of upper
          case characters will be quoted and sent exactly.  Note that this
          behavior applies even for databases which standardize upper
          case names as case insensitive such as Oracle Database.

          The name field may be omitted at construction time and applied
          later, at any time before the Column is associated with a
          :class:`_schema.Table`.  This is to support convenient
          usage within the :mod:`~sqlalchemy.ext.declarative` extension.

        :param type\_: The column's type, indicated using an instance which
          subclasses :class:`~sqlalchemy.types.TypeEngine`.  If no arguments
          are required for the type, the class of the type can be sent
          as well, e.g.::