``cassandra.query`` - Prepared Statements, Batch Statements, Tracing, and Row Factories ======================================================================================= .. module:: cassandra.query .. autofunction:: tuple_factory .. autofunction:: named_tuple_factory .. autofunction:: dict_factory .. autofunction:: ordered_dict_factory .. autoclass:: Statement :members: .. autoclass:: SimpleStatement :members: .. autoclass:: PreparedStatement () :members: .. autoclass:: BoundStatement :members: .. autodata:: UNSET_VALUE :annotation: .. autoclass:: BatchStatement (batch_type=BatchType.LOGGED, retry_policy=None, consistency_level=None) :members: .. autoclass:: BatchType () .. autoattribute:: LOGGED .. autoattribute:: UNLOGGED .. autoattribute:: COUNTER .. autoclass:: cassandra.query.ValueSequence A wrapper class that is used to specify that a sequence of values should be treated as a CQL list of values instead of a single column collection when used as part of the `parameters` argument for :meth:`.Session.execute()`. This is typically needed when supplying a list of keys to select. For example:: >>> my_user_ids = ('alice', 'bob', 'charles') >>> query = "SELECT * FROM users WHERE user_id IN %s" >>> session.execute(query, parameters=[ValueSequence(my_user_ids)]) .. autoclass:: QueryTrace () :members: .. autoclass:: TraceEvent () :members: .. autoexception:: TraceUnavailable