class Profile < ActiveRecord::Base
has_many :favorites, :dependent => :destroy
has_many :friends, :dependent => :destroy
end
I need smth like this:
mysqldump --opt --where="1 limit 1000" -uroot development profiles > profiles.sql
But this dump contains (as expected) only 1000 profiles rows, without associations friends, favorites.
Should I do it using YAML or how should I do it?
Take first 5000 records:
mysqldump --opt --where="1 limit 5000" -uroot development profiles > profiles.sql
Then find all associated with this records friends:
mysqldump --opt --lock-all-tables --where="profile_id IN (SELECT * FROM (SELECT id FROM profiles LIMIT 5000) temp);" -uroot development friends > friends.sql