The following Snippet will iterate over Tables and print out their total of elements simply navigate to your rails project and run rails c
:
ActiveRecord::Base.connection.tables.each do |table|
next if table.match(/\Aschema_migrations\Z/)
klass = table.singularize.camelize.constantize
puts "#{klass.name} has #{klass.count} records"
end
No more guesstimations ;-)
credits: Thomas E