Users must follow the below listed stepwise guidelines for connecting to a Postgres database through python programming:įirstly, search for the CMD from the Windows search bar:Ĭlicking on the “CMD” app will open the command prompt. The psycopg2 module offers a connect() function that assists us in connecting with the suppliers' databases. The psycopg2 is a Postgres database adapter/driver that is used to perform various operations on the Postgres database via python programming. To establish a connection with the Postgres database via python, we will utilize one of the most frequently used adapters named “psycopg2”. How to Connect to Postgres Database Using Python? You will find this write-up useful if you are a Python user looking to connect to a PostgreSQL database server using Python. Over the past few years, it has been noticed that developers prefer to use the PostgreSQL database with all the popular languages, including Java, Python, C++, etc. Password = hasattr(options, 'db_password') and "password=%s" % options.db_password or '' db = psycopg.PostgreSQL is an advanced and open-source relational database that assists users in storing and managing data efficiently. "ALTER TABLE res_currency DROP rounding_bak", "UPDATE res_currency SET rounding = power(10, - rounding_bak)", "ALTER TABLE res_currency ADD rounding NUMERIC(12,6)", "ALTER TABLE res_currency RENAME rounding TO rounding_bak", ![]() # - # change currency rounding # - #Ĭr.execute( """SELECT c.relname,a.attname,a.attlen,a.atttypmod,a.attnotnull,a.atthasdef,t.typname,CASE WHEN a.attlen=-1 THEN a.atttypmod-4 ELSE a.attlen END as size FROM pg_class c,pg_attribute a,pg_type t WHERE c.relname='res_currency' AND a.attname='rounding' AND c.oid=a.attrelid AND a.atttypid=t.oid""") # - # change case date_deadline rounding # - # ![]() # - # drop not null on ir_attachment # - # # - # remove ir_value # - #Ĭr.execute( "delete from ir_values where model = 'ir.ui.menu' and res_id is null") # - # remove old menu # - #Ĭr.execute( "delete from ir_ui_menu where (id not in (select parent_id from ir_ui_menu where parent_id is not null)) and (id not in (select res_id from ir_values where model='ir.ui.menu'))") Ids = ','.join( map( lambda x: str(x), cr.fetchall()))Ĭr.execute( 'UPDATE res_partner_address set country_id = %d where country_id in ('+ids+ ')', (res2,))Ĭr.execute( 'DELETE FROM res_country WHERE code = %s and id <> %d', (c, res2,))Raise Exception( 'This script is provided as an example, you must custom it before')Ĭr.execute( 'SELECT code from res_country where code is not null group by code')Ĭr.execute( 'SELECT max(id) from res_country where code = %s group by code', (c,))Ĭr.execute( 'SELECT id from res_country where code = %s', (c,)) # - # remove old menu # - # while True:Ĭr.execute( "select id from ir_ui_menu where (id NOT IN (select parent_id from ir_ui_menu where parent_id is not null)) and (id NOT IN (select res_id from ir_values where model='ir.ui.menu'))") # - # move user id from hr_analytic_timesheet to account_analytic_line # - #Ĭr.execute( "UPDATE account_analytic_line SET user_id = hr_analytic_er_id FROM hr_analytic_timesheet WHERE hr_analytic_timesheet.line_id = account_analytic_line.id") Password = hasattr(options, 'db_password') and "password=%s" % options.db_password or '' db = nnect( '%s %s %s %s %s' % (host, port, name, user, password), serialize= 0) ![]() User = hasattr(options, 'db_user') and "user=%s" % options.db_user or '' Port = hasattr(options, 'db_port') and "port=%s" % options.db_port or '' Host = hasattr(options, 'db_host') and "host=%s" % options.db_host or '' ![]() Value = False setattr(options, name, value) Value = True if value in ( 'false', 'False'): If not ( hasattr(options, name) and getattr(options, name)):
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