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 votes146 views1 answer
Oracle log files
SQL
2 votes105 views1 answer
When matched in sql server
SQL
0 vote139 views2 answers
Mysql show foreign keys
SQL
2 votes107 views2 answers
Mysql get time from datetime
SQL
2 votes99 views1 answer
Sqlite3 show columns name
SQL
0 vote116 views1 answer
Joins vs includes
SQL
0 vote254 views1 answer
Sql datum formatieren
SQL
0 vote111 views1 answer
Error: connect ECONNREFUSED 127.0.0.1:5432 at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1148:16
SQL
1 vote112 views1 answer
List index mysql cli
SQL
7 votes111 views3 answers
Postgre describe table
SQL