Change from SQLite to PostgreSQL in a fresh Rails project

Change from SQLite to PostgreSQL in a fresh Rails project

ruby-on-rails database sqlite postgresql heroku

ruby-on-rails

rails install pg - Can't find the 'libpq-fe.h header

c ruby-on-rails sqlite ruby-on-rails-3 pg

ruby-on-rails

cannot load such file -- sqlite3/sqlite3_native (LoadError) on ruby on rails

ruby-on-rails sqlite

ruby-on-rails

can't activate sqlite3 (~> 1.3.6), already activated sqlite3-1.4.0

ruby-on-rails ruby sqlite

ruby-on-rails

Cannot add a NOT NULL column with default value NULL in Sqlite3

ruby-on-rails database sqlite sqlite3-ruby

ruby-on-rails

How to access default Rails sqlite db?

ruby-on-rails ruby-on-rails-3 sqlite aptana

ruby-on-rails

Ruby: SQLite3::BusyException: database is locked:

ruby-on-rails sqlite

ruby-on-rails

Rails SQL regular expression

ruby-on-rails activerecord sqlite expression

ruby-on-rails

Deploying RoR app to Heroku with SQLite 3 fails

ruby-on-rails heroku deployment sqlite

ruby-on-rails

How do I install sqlite3 for Ruby on Windows?

ruby-on-rails ruby windows sqlite

ruby-on-rails

SQLite3::BusyException

ruby-on-rails ruby database sqlite

ruby-on-rails

GroupingError: ERROR: column must appear in the GROUP BY clause or be used in an aggregate function

ruby-on-rails postgresql activerecord sqlite ruby-on-rails-4

ruby-on-rails

Ruby on Rails - "Add 'gem sqlite3'' to your Gemfile"

ruby-on-rails ruby sqlite ruby-on-rails-4 ruby-2.0

ruby-on-rails

Clean way to find ActiveRecord objects by id in the order specified

ruby-on-rails sqlite activerecord find rails-activerecord

ruby-on-rails

HEROKU - cannot run git push heroku master [duplicate]

ruby-on-rails ruby heroku sqlite

ruby-on-rails