python - SQL Alchemy Query with Eagerly Loaded Relationships? -

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i'm having trouble using sa's eager relationship loading within query.

i have 2 tables declared so:

class score(base):     __tablename__ = 'score'      school = relationship("school", backref='score')     schoolkey = column('schoolkey', integer, primary_key=true)   class school(base):     __tablename__ = 'school'      schoolkey = deferred(column('schoolkey', integer, primary_key=true))     schoolname = column('schoolname', string)     schooldistrict = deferred(column('schooldistrict', string), group = 'district')     schooldistrictid = deferred(column('schooldistrictid', integer), group = 'district')

i want query score table filter condition coming school table concisely possible. have relationship eagerly loaded.

right when query cannot work:

session.query(score).filter(school.schoolname == 'randomname')

(this crashes computer) anyone have idea how work?

context: know sounds trivial example, score fact table @ heart of >10 tables. want avoid writing 10 .join parts query filter. want avoid this:

session.query(score).join(school).filter(school.schoolname == 'randomname')

temporary solution: accepting need write join dimension tables:

session.query(score).join(school).filter(school.schoolname == 'randomname')

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