python - SQLAlchemy Datetime Differences -

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in sqlalchemy, can query similar to:

self.session.query(jobsrunning).filter((datetime.datetime.utcnow() - jr.start_time) > datetime.timedelta(hours=3)).all()

this fails because i'm assuming datetime.datetime.utcnow() returns double after being subtracted jr.start_time. there way around without pulling datetime.datetime.utcnow() outside of query itself?

for some, may make query cleaner.


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