Method drop_all

lib/sqlalchemy/sql/schema.py:5933–5959

Drop all tables stored in this metadata. Conditional by default, will not attempt to drop tables not present in the target database. :param bind: A :class:`.Connection` or :class:`.Engine` used to access the database. :param tables: Op

(
        self,
        bind: _CreateDropBind,
        tables: Optional[_typing_Sequence[Table]] = None,
        checkfirst: bool = True,
    )

        )

    def drop_all(
        self,
        bind: _CreateDropBind,
        tables: Optional[_typing_Sequence[Table]] = None,
        checkfirst: bool = True,
    ) -> None:
        """Drop all tables stored in this metadata.

        Conditional by default, will not attempt to drop tables not present in
        the target database.

        :param bind:
          A :class:`.Connection` or :class:`.Engine` used to access the
          database.

        :param tables:
          Optional list of ``Table`` objects, which is a subset of the
          total tables in the ``MetaData`` (others are ignored).

        :param checkfirst:
          Defaults to True, only issue DROPs for tables confirmed to be
          present in the target database.

        """
        bind._run_ddl_visitor(
            ddl.SchemaDropper, self, checkfirst=checkfirst, tables=tables
        )


class Computed(FetchedValue, SchemaItem):