Thank you for your information..... On Sunday, September 1, 2013 10:04:48 PM UTC+4:30, herzaso wrote: > > the "c" object is short for "columns" (you can use either) > > check out http://docs.sqlalchemy.org/en/rel_0_7/core/schema.html > > > On Sunday, September 1, 2013 8:27:12 PM UTC+3, Mohsen Pahlevanzadeh wrote: >> >> Dear all, >> >> Before apply code or writing code from a documentation, At first i test >> it into test.py, >> Now ,I read the following doc: >> conjuctions in >> sqlalchemy<http://docs.sqlalchemy.org/en/rel_0_8/core/tutorial.html#conjunctions> >> >> >> I supposed users a class such as tables class: >> ////////////////////// >> class users(declarative_base(bind=engine)): >> >> __tablename__ = 'users'; # >> id = Column(Integer,primary_key = True) >> name = Column(String) >> name_type = Column(Integer) >> addresses = Column(String) >> telephones = Column(String) >> emails = Column(String) >> ////////////////// >> >> But i didn't understand c variable. Object or otehr variable such : >> /////////////// >> >> addresses.c.email_address or users.c.id == addresses.c.user_id >> ///////////////// >> >> >> If possible explain c object. >> >> --mohsen >> >> >>
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