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

2 votes171 views1 answer
How to add where command in update comand with joins
SQL
0 vote193 views1 answer
How to select only a certain date sql
SQL
6 votes189 views2 answers
Oracle trigger
SQL
2 votes194 views1 answer
Oracle generated column
SQL
0 vote165 views1 answer
Mysqldump ignore table
SQL
7 votes191 views2 answers
Mysql Public Key Retrieval is not allowed
SQL
1 vote152 views1 answer
Import in mysql without a software
SQL
1 vote169 views1 answer
Mysql check table exists
SQL
13 votes186 views5 answers
Alter table query sql server change column
SQL
5 votes215 views1 answer
Oracle ora-00054 find
SQL