I'm not sure I understand - the line you've shown doesn't include any joins between Signals and Clips, so I don't know why that error would occur.
In general, if you are seeing that error message, then you need to explicitly tell SQLAlchemy the join condition between the 2 tables. This is normally done using the "primaryjoin" parameter when defining the relationships. If you are getting the error at query time and you really *are* performing a join, you can specify the join condition at that time as well: http://docs.sqlalchemy.org/en/rel_0_9/orm/tutorial.html#querying-with-joins Hope that helps, Simon On Tue, Feb 24, 2015 at 7:56 AM, eli rashlin <eli.rash...@gmail.com> wrote: > Thanks Simon for your replay. > when I'm removing the FK definition from the Column - The tables are being > built as they should - the ptoblem is when i try to perform a join I'm > getting the following error: > > Can't find any foreign key relationships between 'Signals' and 'Clips'. > > and this is the code: > > > return engine.query(func.count(signals_table.Signals.sig_value)).\ > filter(signals_table.Signals.message_id == msg_id).\ > filter(signals_table.Signals.signal_id == sig_id).\ > filter(func.format(signals_table.Signals.sig_value, 2) == > func.format(sig_val, 2)).\ first()[0] > > > and this is the definition of the class Clips: > from datetime import datetime from sqlalchemy import * from sqlalchemy.orm > import relationship from BaseCoverRuns import Base class Clips(Base): > __table_args__ = { 'mysql_engine': 'MyISAM', 'mysql_charset': 'utf8' } > __tablename__ = 'Clips' id = Column(Integer, autoincrement=True, > primary_key=True) clip_name = Column(String(255)) def > get_table_orm_def(self): return self.__table__ def __init__(self, > clip_name=None): self.clip_name = clip_name def __repr__(self): return > "<Clips ('%s')>" % (self.clip_name) > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
