[sqlalchemy] Re: Exists/Correlate newbie question
Michael, I removed the correlate and it still works. I would have sworn until I added the correlation I kept getting an error in the subquery. Thanks again! On Mar 28, 12:25 pm, Michael Bayer mike...@zzzcomputing.com wrote: right so, the correlate() can be against multi_obs directly, not just __table__, and also shouldn't be required at all since auto-correlation is sufficient here. On Mar 28, 2011, at 12:23 PM, dan wrote: Thanks for the feedback. I found an example in google groups that got me on the right track. For those interested, my sqlalchemy looks like: multi_obs2 = aliased(multi_obs) subQ = qaqc.db.session.query(multi_obs2).\ filter(multi_obs2.m_date = beginDate).\ filter(multi_obs2.m_date endDate).\ filter(multi_obs2.sensor_id == nnSensorId).\ filter(multi_obs2.d_top_of_hour == 1).\ filter(multi_obs2.d_report_hour == multi_obs.d_report_hour).\ correlate(multi_obs.__table__).\ statement recs = qaqc.db.session.query(multi_obs).\ filter(multi_obs.m_date = beginDate).\ filter(multi_obs.m_date endDate).\ filter(multi_obs.sensor_id == sensorId).\ filter(multi_obs.d_top_of_hour == 1).\ filter(exists(subQ)).\ order_by(multi_obs.m_date.asc()).all() -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
[sqlalchemy] Re: Exists/Correlate newbie question
Thanks for the feedback. I found an example in google groups that got me on the right track. For those interested, my sqlalchemy looks like: multi_obs2 = aliased(multi_obs) subQ = qaqc.db.session.query(multi_obs2).\ filter(multi_obs2.m_date = beginDate).\ filter(multi_obs2.m_date endDate).\ filter(multi_obs2.sensor_id == nnSensorId).\ filter(multi_obs2.d_top_of_hour == 1).\ filter(multi_obs2.d_report_hour == multi_obs.d_report_hour).\ correlate(multi_obs.__table__).\ statement recs = qaqc.db.session.query(multi_obs).\ filter(multi_obs.m_date = beginDate).\ filter(multi_obs.m_date endDate).\ filter(multi_obs.sensor_id == sensorId).\ filter(multi_obs.d_top_of_hour == 1).\ filter(exists(subQ)).\ order_by(multi_obs.m_date.asc()).all() -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
Re: [sqlalchemy] Re: Exists/Correlate newbie question
right so, the correlate() can be against multi_obs directly, not just __table__, and also shouldn't be required at all since auto-correlation is sufficient here. On Mar 28, 2011, at 12:23 PM, dan wrote: Thanks for the feedback. I found an example in google groups that got me on the right track. For those interested, my sqlalchemy looks like: multi_obs2 = aliased(multi_obs) subQ = qaqc.db.session.query(multi_obs2).\ filter(multi_obs2.m_date = beginDate).\ filter(multi_obs2.m_date endDate).\ filter(multi_obs2.sensor_id == nnSensorId).\ filter(multi_obs2.d_top_of_hour == 1).\ filter(multi_obs2.d_report_hour == multi_obs.d_report_hour).\ correlate(multi_obs.__table__).\ statement recs = qaqc.db.session.query(multi_obs).\ filter(multi_obs.m_date = beginDate).\ filter(multi_obs.m_date endDate).\ filter(multi_obs.sensor_id == sensorId).\ filter(multi_obs.d_top_of_hour == 1).\ filter(exists(subQ)).\ order_by(multi_obs.m_date.asc()).all() -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
