Rails list all tables count

list_tables.rb

tables = []
ActiveRecord::Base.connection.tables.each do |t|
    count = ActiveRecord::Base.connection.exec_query("select count(*) from #{t}").rows[0][0]
    puts "#{t}, #{count.to_i}"
    tables << [t, count.to_i]
end
tables.sort_by { |t| t[1] }.reverse!
puts "====================="
ap tables 

ap ActiveRecord::Base.connection.instance_variable_get(:@config)