• Add support for enabling or disabling transactional tests per database.

  A test class can now override the default use_transactional_tests setting for individual databases, which can be useful if some databases need their current state to be accessible to an external process while tests are running.

  class MostlyTransactionalTest < ActiveSupport::TestCase
    self.use_transactional_tests = true
    skip_transactional_tests_for_database :shared
  end

  Matthew Cheetham, Morgan Mareve

• Cast query_cache value when using URL configuration.

  zzak

• NULLS NOT DISTINCT works with UNIQUE CONSTRAINT as well as UNIQUE INDEX.

  Ryuta Kamizono

• PG::UnableToSend: no connection to the server is now retryable as a connection-related exception

  Kazuma Watanabe

Please check [8-0-stable]) for previous changes.