Method has_sequence

lib/sqlalchemy/engine/interfaces.py:1943–1960

Check the existence of a particular sequence in the database. Given a :class:`_engine.Connection` object and a string `sequence_name`, return ``True`` if the given sequence exists in the database, ``False`` otherwise. This is an internal dialect method. Applications

(
        self,
        connection: Connection,
        sequence_name: str,
        schema: Optional[str] = None,
        **kw: Any,
    )

        raise NotImplementedError()

    def has_sequence(
        self,
        connection: Connection,
        sequence_name: str,
        schema: Optional[str] = None,
        **kw: Any,
    ) -> bool:
        """Check the existence of a particular sequence in the database.

        Given a :class:`_engine.Connection` object and a string
        `sequence_name`, return ``True`` if the given sequence exists in
        the database, ``False`` otherwise.

        This is an internal dialect method. Applications should use
        :meth:`_engine.Inspector.has_sequence`.
        """

        raise NotImplementedError()

    def has_schema(
        self, connection: Connection, schema_name: str, **kw: Any