oops, .filter(database.c.person_id == person_id) fixed the problem.
Thanks!
четверг, 4 января 2018 г., 23:08:35 UTC+2 пользователь sector119 написал:
>
> Hello,
>
> In this query I get extra (unexpected) "databases" table name in FROM
> clause
>
> q = dbsession.query(
> meter_readings.c.reading,
> database.c.service_id
> ). \
> select_from(
> database.outerjoin(meter_readings, true())
> ).filter(Database.person_id == person_id)
>
>
> Here is the query:
> SELECT ...
> FROM *databases*, (SELECT ... FROM databases) AS anon_2 LEFT OUTER JOIN
> LATERAL (SELECT ... FROM meter_readings) AS anon_1 ON true WHERE
> databases.person_id = 123
>
> But I expect to get it without *databases *table like
> SELECT ... FROM (SELECT ... FROM databases) AS anon_2 LEFT OUTER JOIN
> LATERAL (SELECT ... FROM meter_readings) AS anon_1 ON true WHERE
> databases.person_id = 123
>
>
> What am I doing wrong?
>
>
>
> database = dbsession.query(
> Database.person_id,
> Database.service_id,
> Database.person_id_internal,
> Database.date,
> (
> type_coerce(
> Database.meters_readings[
> func.generate_subscripts(Database.meters_readings, 1)
> ],
> type_=ARRAY(Text)
> )[1]
> ).label('meter_id'),
> (
> type_coerce(
> Database.meters_readings[
> func.generate_subscripts(Database.meters_readings, 1)
> ],
> type_=ARRAY(Text)
> )[2]
> ).label('organization_reading')
> ).subquery()
>
> meter_readings = dbsession.query(
> MeterReading.user_id,
> MeterReading.reading
> ). \
> distinct(
> MeterReading.service_id,
> MeterReading.person_id_internal,
> MeterReading.meter_id). \
> filter(
> and_(
> MeterReading.person_id == database.c.person_id,
> MeterReading.service_id == database.c.service_id,
> MeterReading.meter_id == database.c.meter_id,
> MeterReading.commit_date > database.c.date,
> MeterReading.rollback_date == None,
> MeterReading.reading != None
> )
> ). \
> order_by(
> MeterReading.service_id,
> MeterReading.person_id_internal,
> MeterReading.meter_id,
> MeterReading.commit_date.desc(),
> MeterReading.commit_time.desc()
> ).subquery().lateral()
>
>
>
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