Database Wrapper Class: DB

6.4. Database Wrapper Class: DB

Table of Contents
pkey -- return the primary key of a table
get_databases -- get list of databases in the system
get_tables -- get list of tables in connected database
get_attnames -- return the attribute names of a table
get -- get a tuple from a database table
insert -- insert a tuple into a database table
update -- update a database table
clear -- clear a database table
delete -- delete a row from a table

pg module contains a class called DB. All pgobject methods are included in this class also. A number of additional DB class methods are described below. The preferred way to use this module is as follows (See description of the initialization method below.):

import pg

db = pg.DB(...)

for r in db.query(
    "SELECT foo,bar
       FROM foo_bar_table
      WHERE foo !~ bar"
    ).dictresult():

    print '%(foo)s %(bar)s' % r

The following describes the methods and variables of this class.

The DB class is initialized with the same arguments as the pg.connect method. It also initializes a few internal variables. The statement db = DB() will open the local database with the name of the user just like pg.connect() does.

Home
Online Resources
General
Beginner Tutorials
MySQL
PostgreSQL
Oracle
mSQL
Microsoft SQL
Contact Us
Random quote of the moment:
Boy! Eucalyptus!
 
http://www.sql.org/
 
Proudly designed and hosted by OmegaSphere, providers of all your Web Hosting, SSL Certificate, and Domain Name needs!