hello all,
I am newbie in sqlalchemy.I am thrilled by the sqlachemy features. But i got
struck in the how to write the not null for the following:
create table organisation(orgcode varchar(30) not null,orgname text not
null,primary key(orgcode));
I have written the using declarative base as follows but dont know how to
impose not null constraint
from sqlalchemy import create_engine
from sqlalchemy import Table, Column, Integer, String, MetaData, ForeignKey
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker,scoped_session
engine = create_engine('postgresql:///gkanusha', echo=False)
Base = declarative_base()
class Organisation(Base):
__tablename__ = 'Organisation'
orgcode = Column(String,primary_key=True)
orgname = Column(String)
def __init__(self,orgcode,orgname):
self.orgcode = orgcode
self.orgname = orgname
organisation_table = Organisation.__table__
metadata = Base.metadata
metadata.create_all(engine)
Session = scoped_session(sessionmaker(bind=engine))
Session.commit()
There are other columns also but i have taken two columns for simplicity.
Thanks in advance
--
Njoy the share of Freedom :)
Anusha Kadambala
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