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 vote219 views1 answer
Sql select inside select sub query
SQL
0 vote251 views1 answer
Mysql workbench Error Code: 2013. Lost connection to MySQL server during query
SQL
0 vote239 views2 answers
How to prevent sql injection in java
SQL
0 vote240 views1 answer
Convert uniqueidentifier to varchar in sql
SQL
0 vote231 views1 answer
Sql #region
SQL
3 votes228 views2 answers
Sql random integer
SQL
0 vote243 views2 answers
Postgresql change user role grant
SQL
1 vote222 views2 answers
Mysql join two tables
SQL
0 vote251 views1 answer
Soql queries for not contact related account records in salesforce
SQL
5 votes225 views1 answer
FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future. Set it to True or False to suppress this warning.
SQL