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 vote167 views1 answer
MySQL AND Operator
SQL
0 vote153 views1 answer
Mysql percentage of total
SQL
1 vote162 views1 answer
Oracle first row
SQL
4 votes212 views1 answer
Mysql query first character
SQL
0 vote160 views1 answer
Restart sql server command line linux
SQL
0 vote213 views1 answer
Oracle running queries
SQL
11 votes172 views1 answer
Sql insert multiple rows from select
SQL
0 vote167 views1 answer
Mysql get longest string in column
SQL
1 vote154 views4 answers
Between vs in sql
SQL
21 votes169 views1 answer
Cheatsheet for sql
SQL