Filter Like

import os
import sys

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, ForeignKey, Integer, String
Base = declarative_base()
class City(Base):
    __tablename__ = 'city'
    # Here we define columns for the table person
    # Notice that each column is also a normal Python instance attribute.
    id = Column(Integer, primary_key=True)
    name = Column(String(50), nullable=False)
    province = Column(String(50), nullable=True)
    country = Column(String(50), nullable=True)
engine = create_engine('sqlite:///city.db')
Base.metadata.bind = engine

DBSession = sessionmaker()

DBSession.bind = engine

session = DBSession()
for c in session.query(City).\
          filter(City.name.like('%to%')):
        print(c.id, c.name)
1 Toronto
5 Toronto

for c in session.query(City).\
          filter(City.name.like('%o%')):
        print(c.id, c.name)
1 Toronto
2 Montreal
3 Waterloo
5 Toronto
6 Montreal
7 Waterloo

for c in session.query(City).\
          filter(City.name.like('%t%')):
        print(c.id, c.name)
1 Toronto
2 Montreal
3 Waterloo
4 Kitchener
5 Toronto
6 Montreal
7 Waterloo
8 Kitchener

for c in session.query(City).\
          filter(City.name.like('%o')):
        print(c.id, c.name)
1 Toronto
3 Waterloo
5 Toronto
7 Waterloo

# Get only one column
for c in session.query(City.name).\
          filter(City.name.like('%o')):
        print(c.name)
Toronto
Waterloo
Toronto
Waterloo

# Get only two columns
for c in session.query(City.name, City.province).\
          filter(City.name.like('%o')):
        print(c.name, c.province)
Toronto Ontario
Waterloo Ontario
Toronto Ontario
Waterloo Ontario

# Get only two columns
for name, state in session.query(City.name, City.province).\
          filter(City.name.like('%o')):
        print(state, name)
Ontario Toronto
Ontario Waterloo
Ontario Toronto
Ontario Waterloo