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A simple migration lib for Postgres, which relay on pure Postgres SQL files
Ruby
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README.md

PG Migrator

A simple migration, which runs pure Postgres SQL files.

Drop <timestamp>_desc.sql files in db/migrations (and corresponding <timestamp>_desc_down.sql files if you want to be able to downgrade).

Gemfile:

require 'pg-migrator/tasks'

Then make sure that you either have a DATABASE_URL environment variable

ENV['DATABASE_URL'] = "postgres://user:passwd@host/db"

or if using sockets and default user

ENV['DATABASE_URL'] = "postgres:db"

OR define db:setup:

namespace :db do
  task :setup => :environment do
    @migrator = PG::Migrator.new :dbname => 'mydb'
  end
end 

PG::Migrator takes the same arguments as PGconn.

Then as usually:

rake db:reset # drops the "public" schema in your database (not the database it self or any other schemas)
rake db:migrate:up # runs all migrations in order
rake db:migrate:down # runs the down migration for the latest applied migration

License

Copyright (C) 2011 by Carl Hörberg

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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