Class::DBI::Pg(3pm) User Contributed Perl Documentation Class::DBI::Pg(3pm)

Class::DBI::Pg - Class::DBI extension for Postgres

  use strict;
  use base qw(Class::DBI::Pg);
  __PACKAGE__->set_db(Main => 'dbi:Pg:dbname=dbname', 'user', 'password');
  __PACKAGE__->set_up_table('film');

Class::DBI::Pg automate the setup of Class::DBI columns and primary key for Postgres.

select Postgres system catalog and find out all columns, primary key and SERIAL type column.

create table.

 CREATE TABLE cd (
     id SERIAL NOT NULL PRIMARY KEY,
     title TEXT,
     artist TEXT,
     release_date DATE
 );

setup your class.

 package CD;
 use strict;
 use base qw(Class::DBI::Pg);
 __PACKAGE__->set_db(Main => 'dbi:Pg:dbname=db', 'user', 'password');
 __PACKAGE__->set_up_table('cd');

This is almost the same as the following way.

 package CD;
 use strict;
 use base qw(Class::DBI);
 __PACKAGE__->set_db(Main => 'dbi:Pg:dbname=db', 'user', 'password');
 __PACKAGE__->table('cd');
 __PACKAGE__->columns(Primary => 'id');
 __PACKAGE__->columns(All => qw(id title artist release_date));
 __PACKAGE__->sequence('cd_id_seq');

Declares the Class::DBI class specified by TABLENAME. HASHREF can specify options to when setting up the table.

You can specify the column group that you want your columns to be in. 

   $class->set_up_table($table,  { ColumnGroup => 'Essential' });

The default is 'All'

Overrides primary key setting. This can be useful when working with views instead of tables.

Returns the postgres version that you are currently using.

Daisuke Maki "dmaki@cpan.org"

Sebastian Riedel, "sri@oook.de" IKEBE Tomohiro, "ikebe@edge.co.jp"

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

Class::DBI Class::DBI::mysql DBD::Pg

2022-06-11 perl v5.34.0