oh, the pk "24769797950537768" is a postgres biginteger.
On 07/15/2015 04:46 PM, Richard Gerd Kuesters wrote:
thanks Mike! here we go: (Pdb) session.query(MachineUnit).filter(MachineUnit.id_ == 24769797950537768).count() 2015-07-15 16:43:53,114 INFO sqlalchemy.engine.base.Engine SELECT count(*) AS count_1 FROM system_unit, (SELECT system_unit.fk_updated_by AS system_unit_fk_updated_by, system_unit.fk_created_by AS system_unit_fk_created_by, system_unit.dt_created_on AS system_unit_dt_created_on, system_unit.dt_updated_on AS system_unit_updated_on, system_unit.bi_rm_timestamp AS system_unit_bi_rm_timestamp, machine_unit.pk_fk_system_unit_id AS machine_unit_pk_fk_system_unit_id, system_unit.pk_system_unit_id AS system_unit_pk_system_unit_id, system_unit.fk_organization_id AS system_unit_fk_organization_id, system_unit.u_system_unit_name AS system_unit_u_system_unit_name, system_unit.in_ipv4 AS system_unit_in_ipv4, system_unit.p_system_unit_type AS system_unit_system_unit_type, system_unit.i_version AS system_unit_i_version, machine_unit.e_machine_type AS machine_unit_e_machine_type, machine_unit.e_printer_type AS machine_unit_e_printer_type FROM system_unit JOIN machine_unit ON system_unit.pk_system_unit_id = machine_unit.pk_fk_system_unit_id WHERE machine_unit.pk_fk_system_unit_id = %(system_unit_id_1)s AND system_unit.bi_rm_timestamp = %(rm_timestamp_1)s) AS anon_1 WHERE system_unit.bi_rm_timestamp = %(rm_timestamp_2)s 2015-07-15 16:43:53,114 INFO sqlalchemy.engine.base.Engine {'system_unit_id_1': 24769797950537768, 'rm_timestamp_1': 0, 'rm_timestamp_2': 0} 2L (Pdb) len(session.query(MachineUnit).filter(MachineUnit.id_ == 24769797950537768).all()) 2015-07-15 16:44:32,891 INFO sqlalchemy.engine.base.Engine SELECT system_unit.fk_updated_by AS system_unit_fk_updated_by, system_unit.fk_created_by AS system_unit_fk_created_by, system_unit.dt_created_on AS system_unit_dt_created_on, system_unit.dt_updated_on AS system_unit_updated_on, system_unit.bi_rm_timestamp AS system_unit_bi_rm_timestamp, machine_unit.pk_fk_system_unit_id AS machine_unit_pk_fk_system_unit_id, system_unit.pk_system_unit_id AS system_unit_pk_system_unit_id, system_unit.fk_organization_id AS system_unit_fk_organization_id, system_unit.u_system_unit_name AS system_unit_u_system_unit_name, system_unit.in_ipv4 AS system_unit_in_ipv4, system_unit.p_system_unit_type AS system_unit_system_unit_type, system_unit.i_version AS system_unit_i_version, machine_unit.e_machine_type AS machine_unit_e_machine_type, machine_unit.e_printer_type AS machine_unit_e_printer_type FROM system_unit JOIN machine_unit ON system_unit.pk_system_unit_id = machine_unit.pk_fk_system_unit_id WHERE machine_unit.pk_fk_system_unit_id = %(system_unit_id_1)s AND system_unit.bi_rm_timestamp = %(rm_timestamp_1)s 2015-07-15 16:44:32,891 INFO sqlalchemy.engine.base.Engine {'system_unit_id_1': 24769797950537768, 'rm_timestamp_1': 0} 1 # MachineUnit = Entity it fits to the faq entry you mentioned earlier? :) cheers, richard. On 07/15/2015 04:22 PM, Mike Bayer wrote:On 7/15/15 3:13 PM, Richard Gerd Kuesters wrote:what does echo='debug' say ? both for the first query and the second. Also, that integer ID looks kind of like it itself could be hitting some overflow limit at some point. I assume no issue for a simple integer in the thousands ?does this happen even with a filter for a PK? the problem is:>>> session.query(Entity).filter(Entity.id_ == 24769797950537768).count() == 2 >>> len(session.query(Entity).filter(Entity.id_ == 24769797950537768).all()) == 1i don't see where i have 2 pks with the same value ... in psql: mydb=# select count(*) from entity where id_ = 24769797950537768; count ------- 1 (1 row) is this really right?On 07/15/2015 04:02 PM, Mike Bayer wrote:On 7/15/15 2:11 PM, Richard Gerd Kuesters wrote:hello!i'm encountering a weird behaviur with session.count() when using a custom mapper that implements a where condition to every session.first, what is happening: >>> len(session.query(Entity).all()) == 1 >>> session.query(Entity).count() == 2your all() query is returning two rows that have the same primary key for Entity. The Query object de-duplicates redundant rows based on entity identity. Turn on echo='debug' and you should see this in the rows coming back.we really need an FAQ entry for this one."Entity" is a base polymorphic entity, inherited by other classes. my custom mapper: class DeletedOption(MapperOption): propagate_to_loaders = True def process_query(self, query): mzo = query._mapper_zero() if hasattr(mzo, 'class_'): parent_cls = mzo.class_ filter_crit = parent_cls.rm_timestamp == 0 if query._criterion is None: query._criterion = filter_crit else: query._criterion = query._criterion & filter_criti remember getting this custom mapper option in a recipe ... i'm running sqla 1.0.6. if there's any information i can provide to enlighten this out, please let me know.best regards, richard. --You received this message because you are subscribed to the Google Groups "sqlalchemy" group. 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