Sqlalchemy sequence postgresql

#!/usr/bin/env python

from sqlalchemy import create_engine, Column, Integer, String, Sequence
from sqlalchemy.ext.declarative import declarative_base

Base = declarative_base()
USER_ID_SEQ = Sequence('user_id_seq')  # define sequence explicitly
class User(Base):
    __tablename__ = 'users'
    # use sequence in column definition, and pass .next_value() as server_default
    id = Column(Integer, USER_ID_SEQ, primary_key=True, server_default=USER_ID_SEQ.next_value())
    name = Column(String(50))
    fullname = Column(String(50))
    password = Column(String(12))

    def __repr__(self):
        return "<User(name='%s', fullname='%s', password='%s')>" % (
                                self.name, self.fullname, self.password)

db_url = 'postgresql://localhost/serial'
engine = create_engine(db_url, echo=True)
Base.metadata.create_all(engine)

Source: stackoverflow.com

Similar codes

1 vote133 views1 answer
Oracle get current schema
SQL
0 vote132 views1 answer
Mod function example
SQL
0 vote128 views1 answer
Mysqldump ignore table
SQL
0 vote124 views1 answer
How to change null display in psql
SQL
0 vote145 views1 answer
Oracle job schedules
SQL
0 vote204 views1 answer
How to update random rows in sql
SQL
0 vote130 views1 answer
How to insert a uniqueidentifier in sql
SQL
0 vote131 views1 answer
Sql create table with references not primary key
SQL
14 votes127 views3 answers
How to add default constraint in mysql
SQL
8 votes136 views1 answer
Oracle create datafile
SQL