SQLAlchemy连接mssql的demo

# -*- coding: ISO-8859-1 -*-

#test.py

import sqlalchemy import traceback import pyodbc from sqlalchemy import create_engine from sqlalchemy import Table, Column, Integer, String, MetaData, ForeignKey from sqlalchemy.orm import mapper from sqlalchemy.orm import sessionmaker from sqlalchemy.orm import deferred

class User(object):  def __init__(self, name, usercode, password,id):   self.name = name   self.usercosde = usercode   self.password = password   self.id   = id  def __repr__(self):   return "" % (self.id,self.name, self.usercode, self.password)

print sqlalchemy.__version__ try:

 engine = create_engine('mssql://sa:123456@/?dsn=officialcar',module=pyodbc,echo=True)

 metadata = MetaData()  users_table = Table('t_user_info', metadata,       Column('id', Integer, primary_key=True),       Column('name', String(40)),       Column('usercode', String(100)),       Column('password', String(15))       )  #metadata.create_all(engine)

 #mapper(User, users_table,properties = {'name' : deferred(users_table.c.name)})  mapper(User, users_table,order_by=users_table.c.name.desc())

 #ed_user = User(unicode('测试'), '8888', 'edspassword')  #ed_user = User(None,'测试', '8888', 'edspassword')  #print ed_user.name  #print ed_user.usercode

 Session = sessionmaker(bind=engine, autoflush=True, transactional=True)

 session = Session()  #session.save(ed_user)

 #session.commit()  #print ed_user.id

 users = session.query(User).filter(User.name.like('陈%'))  #users = session.query(User)  #print 'size',len(users)  for user in users:   print 'new',repr(user)

 #conn = engine.connect()  #result = conn.execute("select name from t_user_info")  #for row in result:  # print "username:", row['name']  #conn.close()

 #cnxn = pyodbc.connect("DSN=officialcar;UID=sa;PWD=123456")  #cursor = cnxn.cursor()  #cursor.execute('select * from t_user_info')  #a=cursor.fetchall()  #print 'pyodbc',a except :  traceback.print_exc()