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

0 vote142 views1 answer
Oracle create table auto generated primary key
SQL
0 vote185 views1 answer
Call function sql oracle with output put line
SQL
1 vote150 views3 answers
Update from select sqlite
SQL
0 vote157 views1 answer
Nodejs sql get one to many relationship as array
SQL
0 vote139 views1 answer
On update current_timestamp jpa
SQL
0 vote149 views1 answer
Soql user profile
SQL
0 vote167 views1 answer
Sort by
SQL
10 votes167 views4 answers
Fetch first 5 characters of the string in sql
SQL
0 vote131 views1 answer
Check sql database table lock
SQL
0 vote136 views1 answer
Oracle create job if not exists
SQL